covid-19 in ontario: january 15, 2020 to january 1, 2020 · covid-19 in ontario: january 15, 2020...
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 1
Daily Epidemiologic Summary
COVID-19 in Ontario: January 15, 2020 to January 1, 2021
This report includes the most current information available from CCM and other case management systems (CCM plus) as of January 1, 2021.
Please visit the interactive Ontario COVID-19 Data Tool to explore recent COVID-19 data by public health unit, age group, sex, and trends over time.
A weekly summary report is available with additional information to complement the daily report.
This daily report provides an epidemiologic summary of recent COVID-19 activity in Ontario. The change in cases is determined by taking the cumulative difference between the current day and the previous day.
Highlights There are a total of 187,998 confirmed cases of COVID-19 in Ontario reported to date.
Compared to the previous day*, this represents:
An increase of 3,363 confirmed cases (percent change of +35.8%)
An increase of 44 deaths (percent change of -13.7%)
An increase of 2,054 resolved cases (percent change of -16.5%)
* Due to a data issue, cases reported on December 31, 2020 for Toronto Public Health are under-reported. This issue also affects overall case counts for Ontario.
In this document, the term ‘change in cases’ refers to cases publicly reported by the province for a given day. Data corrections or updates can result in case records being removed and or updated from past reports and may result in subset totals for updated case counts (i.e., age group, gender) differing from the overall updated case counts.
The term public health unit reported date in this document refers to the date local public health units were first notified of the case.
https://www.publichealthontario.ca/en/data-and-analysis/infectious-disease/covid-19-data-surveillance/covid-19-data-tool
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 2
Case Characteristics
Table 1a. Summary of recent confirmed cases of COVID-19: Ontario
Change in cases
December 31, 2020
Change in cases
January 1, 2021
Percentage change
January 1, 2021 compared to
December 31, 2020
Cumulative case count
as of January 1, 2021
Total number of cases 2,476* 3,363 +35.8% 187,998
Number of deaths 51 44 -13.7% 4,625
Number resolved 2,460 2,054 -16.5% 160,526
Note: The number of cases publicly reported by the province each day may not align with case counts reported to public health on a given day; public health unit reported date refers to the date local public health was first notified of the case. Data corrections or updates can result in case records being removed and or updated from past reports.
Data Source: CCM plus
* Due to a data issue, cases reported on December 31, 2020 for Toronto Public Health are under-reported in this table. This issue also affects overall case counts for Ontario.
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 3
Table 1b. Summary of recent confirmed cases of COVID-19 by age group and gender: Ontario
Change in cases
December 31, 2020
Change in cases
January 1, 2021
Cumulative case count
as of January 1, 2021
Gender: Male 1,211 1,622 92,028
Gender: Female 1,243 1,758 94,819
Ages: 19 and under 326 440 24,328
Ages: 20-39 865 1,258 68,379
Ages: 40-59 757 970 54,218
Ages: 60-79 378 499 27,197
Ages: 80 and over 142 196 13,831
Note: Not all cases have a reported age or gender reported. Data corrections or updates can result in case records being removed and or updated from past reports and may result in subset totals (i.e., age group, gender) differing from past publicly reported case counts.
Data Source: CCM plus
Table 2. Summary of recent confirmed cases of COVID-19 in school aged children by age group, August 30, 2020 to January 1, 2021: Ontario
Change in cases
December 31, 2020
Change in cases
January 1, 2021
Cumulative case count from August 30, 2020
to January 1, 2021
Ages: 4 to 8 56 63 3,894
Ages: 9 to 13 78 113 5,507
Ages: 14 to 17 103 122 5,437
Note: Includes all confirmed cases of COVID-19 for specified ages, regardless of school attendance. Data corrections or updates can result in case records being removed and or updated from past reports and may result in subset totals (i.e., age group) differing from past publicly reported case counts.
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 4
Table 3. Summary of recent confirmed cases of COVID-19 in long-term care homes: Ontario
Long-term care home cases Change in cases
December 31, 2020
Change in cases
January 1, 2021
Cumulative case count as of January 1, 2021
Residents 116 74 11,217
Health care workers 49 36 4,365
Deaths among residents 23 14 2,814
Deaths among health care workers
0 0 8
Note: Information on how long-term care home residents and health care workers are identified is available in the technical notes. Also, the change in cases in these categories may represent existing case records that have been updated.
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 5
Time
Figure 1. Confirmed cases of COVID-19 by likely acquisition and public health unit reported date: Ontario, January 15, 2020 to January 1, 2021
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 6
Figure 2. Confirmed cases of COVID-19 by likely acquisition and approximation of symptom onset date: Ontario, January 15, 2020 to January 1, 2021
Note: Not all cases may have an episode date and those without one are not included in the figure. Episode date is defined and available in the technical notes.
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 7
Figure 3. Number of COVID-19 tests completed and percent positivity: Ontario, March 29, 2020 to December 30*, 2020
Note: The number of tests performed does not reflect the number of specimens or persons tested. More than one test may be performed per specimen or per person. As such, the percentage of tests that were positive does not necessarily translate to the number of specimens or persons testing positive.
Data Source: The Provincial COVID-19 Diagnostics Network, data reported by member microbiology laboratories.
* The daily number of tests completed and percent positivity are not available for December 31, 2020.
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 8
Severity Figure 4. Confirmed deaths among COVID-19 cases by date of death: Ontario, March 1, 2020 to January 1, 2021
Note: Cases without a death date are not included in the figure.
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 9
Table 4. Confirmed cases of COVID-19 by severity: Ontario
Blank cell Cumulative case count as of January 1, 2021
Percentage of all cases
Cumulative deaths reported (please note there may be a reporting delay for deaths)
4,625 2.5%
Deaths reported in ages: 19 and under 1 < 0.1%
Deaths reported in ages: 20-39 18 < 0.1%
Deaths reported in ages: 40-59 177 0.3%
Deaths reported in ages: 60-79 1,228 4.5%
Deaths reported in ages: 80 and over 3,200 23.1%
Ever in ICU 1,956 1.0%
Ever hospitalized 9,921 5.3%
Note: Not all cases have an age reported. Data corrections or updates can result in case records being removed and/or updated and may result in totals differing from past publicly reported case counts.
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 10
Geography
Table 5. Summary of recent confirmed cases of COVID-19 by public health unit and region: Ontario
Public Health Unit Name
Change in cases
December 31, 2020
Change in cases
January 1, 2021
Cumulative case count
Cumulative rate per 100,000 population
Northwestern Health Unit 4 5 172 196.2
Thunder Bay District Health Unit 4 4 588 392.1
TOTAL NORTH WEST 8 9 760 319.8
Algoma Public Health 1 9 75 65.5
North Bay Parry Sound District Health Unit
4 2 132 101.7
Porcupine Health Unit 2 -1 130 155.8
Public Health Sudbury & Districts 3 3 280 140.7
Timiskaming Health Unit 2 1 73 223.3
TOTAL NORTH EAST 12 14 690 123.4
Ottawa Public Health 93 81 10,241 971.0
Eastern Ontario Health Unit 25 53 1,472 705.3
Hastings Prince Edward Public Health
2 14 293 173.9
Kingston, Frontenac and Lennox & Addington Public Health
5 8 547 257.1
Leeds, Grenville & Lanark District Health Unit
5 12 694 400.8
Renfrew County and District Health Unit
1 -1 238 219.1
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 11
Public Health Unit Name
Change in cases
December 31, 2020
Change in cases
January 1, 2021
Cumulative case count
Cumulative rate per 100,000 population
TOTAL EASTERN 131 167 13,485 700.0
Durham Region Health Department 149 115 7,519 1,055.4
Haliburton, Kawartha, Pine Ridge District Health Unit
8 20 544 287.9
Peel Public Health 480 713 40,497 2,521.7
Peterborough Public Health 13 20 364 246.0
Simcoe Muskoka District Health Unit
53 58 3,699 616.9
York Region Public Health 300 395 18,029 1,470.8
TOTAL CENTRAL EAST 1,003 1,321 70,652 1,576.8
Toronto Public Health 499* 700 59,873 1,918.8
TOTAL TORONTO 499* 700 59,873 1,918.8
Chatham-Kent Public Health 21 9 715 672.5
Grey Bruce Health Unit 7 11 465 273.7
Huron Perth Public Health 8 22 711 508.7
Lambton Public Health 37 70 856 653.6
Middlesex-London Health Unit 52 94 3,370 664.0
Southwestern Public Health 71 56 1,435 678.5
Windsor-Essex County Health Unit 175 226 7,953 1,872.0
TOTAL SOUTH WEST 371 488 15,505 917.0
Brant County Health Unit 22 26 1,026 661.1
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 12
Public Health Unit Name
Change in cases
December 31, 2020
Change in cases
January 1, 2021
Cumulative case count
Cumulative rate per 100,000 population
City of Hamilton Public Health Services
111 171 6,300 1,063.9
Haldimand-Norfolk Health Unit 29 36 939 823.1
Halton Region Public Health 78 152 5,880 949.8
Niagara Region Public Health 101 166 4,204 889.8
Region of Waterloo Public Health and Emergency Services
51 58 5,976 1,022.7
Wellington-Dufferin-Guelph Public Health
60 55 2,708 868.2
TOTAL CENTRAL WEST 452 664 27,033 948.8
TOTAL ONTARIO 2,476 3,363 187,998 1,264.8
Notes: Health units with data corrections or updates could result in records being removed from totals resulting in negative counts.
Data Source: CCM plus
* Due to a data issue, cases reported on December 31, 2020 for Toronto Public Health are under-reported in this table. This issue also affects overall case counts for Ontario.
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 13
Outbreaks
Table 6. Summary of recent confirmed COVID-19 outbreaks reported in long-term care homes, retirement homes and hospitals by status: Ontario
Institution type
Change in outbreaks
December 31, 2020
Change in outbreaks January 1,
2021
Number of ongoing
outbreaks
Cumulative number of outbreaks reported
Long-term care homes 10 15 216 938
Retirement homes 10 3 120 493
Hospitals 1 4 55 246
Note: Ongoing outbreaks include all outbreaks that are ‘Open’ in CCM plus without a ‘Declared Over Date’ recorded, or where the outbreak started more than five months ago, even for outbreaks where the Outbreak Status value selected in CCM/iPHIS is 'OPEN'. The start of the outbreak is determined by the onset date of first case, or if missing the outbreak reported date, or else if that is also missing, then the outbreak created date.
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 14
Technical Notes
Data Sources The data for this report were based on:
Information extracted from the Ontario Ministry of Health (Ministry) integrated Public Health Information System (iPHIS) database for Toronto Public Health as of January 1, 2021 at 1 p.m.
Information successfully uploaded to the Ministry from Local Systems: Toronto Public Health (Coronavirus Rapid Entry System) CORES as of January 1, 2021 at 2 p.m.
Information successfully extracted from the Public Health Case and Contact Management Solution (CCM) for all other PHUs by PHO as of January 1, 2021 at 1 p.m.
CCM and CCM plus (which includes CCM, iPHIS, and CORES) are dynamic disease reporting systems, which allow ongoing updates to data previously entered. As a result, data extracted from CCM and the Local Systems represent a snapshot at the time of extraction and may differ from previous or subsequent reports.
Ontario population projection data for 2020 were sourced from Ministry, IntelliHEALTH Ontario. Data were extracted on November 26, 2019.
COVID-19 test data were based on information from The Provincial COVID-19 Diagnostics Network, reported by member microbiology laboratories.
Data Caveats The data only represent cases reported to public health units and recorded in CCM plus. As a
result, all counts will be subject to varying degrees of underreporting due to a variety of factors, such as disease awareness and medical care seeking behaviours, which may depend on severity of illness, clinical practice, changes in laboratory testing, and reporting behaviours.
Lags in CCM plus data entry due to weekend staffing may result in lower case counts than would otherwise be recorded.
Only cases meeting the confirmed case classification as listed in the MOH COVID-19 case definition are included in the report counts from CCM plus. This includes persons with a positive detection of serum/plasma immunoglobulin G (IgG) antibodies to SARS-CoV-2, which was added to the confirmed case definition on August 6, 2020.
The number of tests performed does not reflect the number of specimens or persons tested. More than one test may be performed per specimen or per person. As such, the percentage of tests that were positive does not necessarily translate to the number of specimens or persons testing positive.
Reported date is the date the case was reported to the public health unit.
http://www.health.gov.on.ca/en/pro/programs/publichealth/coronavirus/2019_guidance.aspxhttp://www.health.gov.on.ca/en/pro/programs/publichealth/coronavirus/2019_guidance.aspx
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 15
Case episode date is based on an estimate of the best date of disease onset. This date is calculated based on either the date of symptom onset, specimen collection/test date, or the date reported to the public health unit.
Resolved cases are determined only for COVID-19 cases that have not died. Cases that have died are considered fatal and not resolved. The following cases are classified as resolved:
Cases that are reported as ‘recovered’ in CCM
Cases that are not hospitalized and are 14 days past their episode date
Cases that are currently hospitalized (no hospital end date entered) and have a status of ‘closed’ in CCM (indicating public health unit follow-up is complete) and are 14 days past their symptom onset date or specimen collection date
Hospitalization includes all cases for which a hospital admission date was reported at the time of data extraction. It includes cases that have been discharged from hospital as well as cases that are currently hospitalized. Emergency room visits are not included in the number of reported hospitalizations.
ICU admission includes all cases for which an ICU admission date was reported at the time of data extraction. It is a subset of the count of hospitalized cases. It includes cases that have been treated or that are currently being treated in an ICU.
Orientation of case counts by geography is based on the diagnosing health unit (DHU). DHU refers to the case's public health unit of residence at the time of illness onset and not necessarily the location of exposure. Cases for which the DHU was reported as MOH (to signify a case that is not a resident of Ontario) have been excluded from the analyses.
Likely source of acquisition is determined by examining the epidemiologic link and epidemiologic link status fields in CCM and local systems. If no epidemiologic link is identified in those fields the risk factor fields are examined to determine whether a case travelled, was associated with a confirmed outbreak, was a contact of a case, had no known epidemiological link (sporadic community transmission) or was reported to have an unknown source/no information was reported. Some cases may have no information reported if the case is untraceable, was lost to follow-up or referred to FNIHB. Cases with multiple risk factors were assigned to a single likely acquisition source group which was determined hierarchically in the following order:
For cases with an episode date on or after April 1, 2020: Outbreak-associated > close contact of a confirmed case > travel > no known epidemiological link > information missing or unknown
For cases with an episode date before April 1, 2020: Travel > outbreak-associated > close contact of a confirmed case > no known epidemiological link > information missing or unknown
Deaths are determined by using the outcome field in CCM plus. Any case marked ‘Fatal’ is included in the deaths data. The CCM field Type of Death is not used to further categorize the data.
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 16
The date of death is determined using the outcome date field for cases marked as ‘Fatal’ in the outcome field.
COVID-19 cases from CCM plus for which the Classification and/or Disposition was reported as ENTERED IN ERROR, DOES NOT MEET DEFINITION, IGNORE, DUPLICATE, or any variation on these values have been excluded. The provincial case count for COVID-19 includes cases that are counted once across all systems from which the case data are obtained. Duplicate records may exist if these records were not identified and resolved prior to data upload to the Ministry.
Ongoing outbreaks include all outbreaks that are ‘Open’ in CCM plus without a ‘Declared Over Date’ recorded, or where the outbreak started more than five months ago, even for outbreaks where the Outbreak Status value selected in CCM/iPHIS is 'OPEN'. The start of the outbreak is determined by the onset date of first case, or if missing the outbreak reported date, or else if that is also missing, then the outbreak created date.
‘Long-term care home residents’ includes cases that reported ‘Yes’ to the risk factor ‘Resident of a long-term care home’; or ‘Yes’ to the risk factor ‘Resident of nursing home or other chronic care facility’ and reported to be part of an outbreak assigned as a long-term care home (via the Outbreak number or case comments field); or were reported to be part of an outbreak assigned as a long-term care home (via the outbreak number or case comments field) with an age over 70 years and did not report ‘No’ to the risk factors ‘Resident of long-term care home’ or ‘Resident of nursing home or other chronic care facility’. ‘Long-term care home residents’ excludes cases that reported ‘Yes’ to any of the health care worker occupational risk factors.
The ‘health care workers’ variable includes cases that reported ‘Yes’ to any of the occupation of health care worker, doctor, nurse, dentist, dental hygienist, midwife, other medical technicians, personal support worker, respiratory therapist, first responder.
‘Health care workers associated with long-term care outbreaks’ includes ‘health care workers’ reported to be part of an outbreak assigned as a long-term care home (via the outbreak number or case comments field). Excludes cases that reported ‘Yes’ to risk factors ‘Resident of long-term care home’ or ‘Resident of nursing home or other chronic care facility’ and ‘Yes’ to the calculated ‘health care workers’ variable.
Percent change is calculated by taking the difference between the current period (i.e., daily count or sum of the daily count over a 7-day period) and previous period (i.e., daily count or sum of the daily count over a 7-day period), divided by the previous period.
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 17
Appendix A Table A1. Weekly rates of confirmed COVID-19 cases per 100,000 population over recent rolling 7-day periods, by reported date and public health unit: Ontario, December 17, 2020 to December 29, 2020
Public Health Unit Name
Dec 17 to
Dec 23
Dec 18 to
Dec 24
Dec 19 to
Dec 25
Dec 20 to
Dec 26
Dec 21 to
Dec 27
Dec 22 to
Dec 28
Dec 23 to
Dec 29
% change from
Dec 17-23 to Dec 23-
29
NORTH WEST
Northwestern Health Unit
11.4 19.4 19.4 22.8 24.0 19.4 19.4 +70.2%
Thunder Bay District Health Unit
59.3 52.0 48.0 40.0 41.3 38.0 26.0 -56.2%
NORTH EAST
Algoma Public Health
1.7 1.7 1.7 2.6 2.6 2.6 1.7 0.0%
North Bay Parry Sound District Health Unit
10.8 12.3 10.0 10.0 8.5 9.2 9.2 -14.8%
Porcupine Health Unit
10.8 9.6 9.6 7.2 8.4 3.6 1.2 -88.9%
Public Health Sudbury & Districts
6.0 5.5 6.5 6.5 6.0 7.0 8.0 +33.3%
Timiskaming Health Unit
61.2 70.4 79.5 76.5 76.5 67.3 70.4 +15.0%
EASTERN
Ottawa Public Health
29.8 31.6 37.1 34.5 38.3 40.0 46.5 +56.0%
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 18
Public Health Unit Name
Dec 17 to
Dec 23
Dec 18 to
Dec 24
Dec 19 to
Dec 25
Dec 20 to
Dec 26
Dec 21 to
Dec 27
Dec 22 to
Dec 28
Dec 23 to
Dec 29
% change from
Dec 17-23 to Dec 23-
29
Eastern Ontario Health Unit
50.3 54.1 51.7 49.4 54.1 58.0 66.6 +32.4%
Hastings Prince Edward Public Health
16.6 14.8 11.3 9.5 9.5 8.9 10.7 -35.5%
Kingston, Frontenac and Lennox & Addington Public Health
27.3 27.3 22.1 24.4 21.2 22.6 19.3 -29.3%
Leeds, Grenville & Lanark District Health Unit
13.9 12.1 9.8 9.8 11.5 13.9 19.6 +41.0%
Renfrew County and District Health Unit
12.9 10.1 12.0 9.2 10.1 10.1 11.0 -14.7%
CENTRAL EAST
Durham Region Health Department
96.6 92.2 89.4 87.9 84.1 84.9 87.9 -9.0%
Haliburton, Kawartha, Pine Ridge District Health Unit
25.9 26.5 25.4 22.8 21.2 20.6 21.7 -16.2%
Peel Public Health
194.7 190.8 182.6 177.0 173.9 173.9 178.0 -8.6%
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 19
Public Health Unit Name
Dec 17 to
Dec 23
Dec 18 to
Dec 24
Dec 19 to
Dec 25
Dec 20 to
Dec 26
Dec 21 to
Dec 27
Dec 22 to
Dec 28
Dec 23 to
Dec 29
% change from
Dec 17-23 to Dec 23-
29
Peterborough Public Health
18.9 21.6 31.8 30.4 33.8 31.1 30.4 +60.8%
Simcoe Muskoka District Health Unit
59.5 57.9 58.4 57.4 56.9 61.0 59.9 +0.7%
York Region Public Health
129.9 130.9 129.7 121.8 114.5 125.8 136.9 +5.4%
TORONTO
Toronto Public Health
145.2 141.1 141.5 146.2 142.1 147.4 153.0 +5.4%
SOUTH WEST
Chatham-Kent Public Health
37.6 35.7 45.1 46.1 52.7 64.0 75.2 +100.0%
Grey Bruce Health Unit
22.4 20.6 21.2 20.6 19.4 17.7 15.9 -29.0%
Huron Perth Public Health
52.2 63.0 65.1 76.6 74.4 73.7 78.0 +49.4%
Lambton Public Health
77.1 77.1 81.7 104.6 115.3 125.2 123.7 +60.4%
Middlesex-London Health Unit
99.5 93.4 88.5 91.6 92.2 95.2 103.0 +3.5%
Southwestern Public Health
97.9 97.9 105.4 102.1 109.2 102.6 112.1 +14.5%
Windsor-Essex County Health Unit
277.1 258.2 271.4 272.1 270.5 270.5 262.7 -5.2%
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 20
Public Health Unit Name
Dec 17 to
Dec 23
Dec 18 to
Dec 24
Dec 19 to
Dec 25
Dec 20 to
Dec 26
Dec 21 to
Dec 27
Dec 22 to
Dec 28
Dec 23 to
Dec 29
% change from
Dec 17-23 to Dec 23-
29
CENTRAL WEST
Brant County Health Unit
63.1 51.5 50.3 50.3 51.5 61.2 61.2 -3.0%
City of Hamilton Public Health Services
123.1 108.4 109.1 106.7 115.2 123.1 128.2 +4.1%
Haldimand-Norfolk Health Unit
71.0 76.3 72.8 57.0 60.5 53.5 60.5 -14.8%
Halton Region Public Health
83.5 87.9 83.7 86.4 86.4 94.7 93.4 +11.9%
Niagara Region Public Health
125.1 131.9 114.3 109.8 117.9 121.9 127.8 +2.2%
Region of Waterloo Public Health and Emergency Services
110.7 109.2 104.4 97.0 91.4 88.0 93.8 -15.3%
Wellington-Dufferin-Guelph Public Health
103.6 105.5 93.6 95.2 98.4 102.9 102 -1.5%
TOTAL ONTARIO
109.0 106.7 105.2 104.4 103.4 106.7 110.7 +1.6%
Note: Rates are based on the sum of the daily case counts during the date ranges specified in each column.
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to January 1, 2021 21
Disclaimer This document was developed by Public Health Ontario (PHO). PHO provides scientific and technical advice to Ontario’s government, public health organizations and health care providers. PHO’s work is guided by the current best available evidence at the time of publication.
The application and use of this document is the responsibility of the user. PHO assumes no liability resulting from any such application or use.
This document may be reproduced without permission for non-commercial purposes only and provided that appropriate credit is given to PHO. No changes and/or modifications may be made to this document without express written permission from PHO.
Citation Ontario Agency for Health Protection and Promotion (Public Health Ontario). Epidemiologic summary: COVID-19 in Ontario – January 15, 2020 to January 1, 2021. Toronto, ON: Queen’s Printer for Ontario; 2021.
For Further Information For more information, email [email protected].
Public Health Ontario Public Health Ontario is an agency of the Government of Ontario dedicated to protecting and promoting the health of all Ontarians and reducing inequities in health. Public Health Ontario links public health practitioners, front-line health workers and researchers to the best scientific intelligence and knowledge from around the world.
For more information about PHO, visit publichealthontario.ca.
mailto:[email protected]://www.publichealthontario.ca/
Structure Bookmarks ArtifactArtifactArtifactDaily Epidemiologic Summary COVID-19 in Ontario: January 15, 2020 to January 1, 2021 This report includes the most current information available from CCM and other case management systems (CCM plus) as of January 1, 2021. PSpanPlease visit the interactive Ontario COVID-19 Data ToolOntario COVID-19 Data Tool
to explore recent COVID-19 data by public health unit, age group, sex, and trends over time.
A weekly summary report is available with additional information to complement the daily report. This daily report provides an epidemiologic summary of recent COVID-19 activity in Ontario. The change in cases is determined by taking the cumulative difference between the current day and the previous day. Highlights There are a total of 187,998 confirmed cases of COVID-19 in Ontario reported to date. There are a total of 187,998 confirmed cases of COVID-19 in Ontario reported to date. There are a total of 187,998 confirmed cases of COVID-19 in Ontario reported to date.
Compared to the previous day*, this represents: Compared to the previous day*, this represents:
An increase of 3,363 confirmed cases (percent change of +35.8%) An increase of 3,363 confirmed cases (percent change of +35.8%)
An increase of 44 deaths (percent change of -13.7%) An increase of 44 deaths (percent change of -13.7%)
An increase of 2,054 resolved cases (percent change of -16.5%) An increase of 2,054 resolved cases (percent change of -16.5%)
* Due to a data issue, cases reported on December 31, 2020 for Toronto Public Health are under-reported. This issue also affects overall case counts for Ontario. In this document, the term ‘change in cases’ refers to cases publicly reported by the province for a given day. Data corrections or updates can result in case records being removed and or updated from past reports and may result in subset totals for updated case counts (i.e., age group, gender) differing from the overall updated case counts. In this document, the term ‘change in cases’ refers to cases publicly reported by the province for a given day. Data corrections or updates can result in case records being removed and or updated from past reports and may result in subset totals for updated case counts (i.e., age group, gender) differing from the overall updated case counts. The term public health unit reported date in this document refers to the date local public health units were first notified of the case.
Case Characteristics Table 1a. Summary of recent confirmed cases of COVID-19: Ontario TableTRTHSpan
THSpanChange in cases December 31, 2020
THSpanChange in cases January 1, 2021
THSpanPercentage change January 1, 2021 compared to December 31, 2020
THSpanCumulative case count as of January 1, 2021
Span
TRTDSpanTotal number of cases
TDSpan2,476*
TDSpan3,363
TDSpan+35.8%
TDSpan187,998
TRTDSpanNumber of deaths
TDSpan51
TDSpan44
TDSpan-13.7%
TDSpan4,625
TRTDSpanNumber resolved
TDSpan2,460
TDSpan2,054
TDSpan-16.5%
TDSpan160,526
Span
Note: The number of cases publicly reported by the province each day may not align with case counts reported to public health on a given day; public health unit reported date refers to the date local public health was first notified of the case. Data corrections or updates can result in case records being removed and or updated from past reports. Data Source: CCM plus * Due to a data issue, cases reported on December 31, 2020 for Toronto Public Health are under-reported in this table. This issue also affects overall case counts for Ontario. Table 1b. Summary of recent confirmed cases of COVID-19 by age group and gender: Ontario TableTRTHSpan
THSpanChange in cases December 31, 2020
THSpanChange in cases January 1, 2021
THSpanCumulative case count as of January 1, 2021
Span
TRTDSpanGender: Male
TDSpan1,211
TDSpan1,622
TDSpan92,028
TRTDSpanGender: Female
TDSpan1,243
TDSpan1,758
TDSpan94,819
TRTDSpanAges: 19 and under
TDSpan326
TDSpan440
TDSpan24,328
TRTDSpanAges: 20-39
TDSpan865
TDSpan1,258
TDSpan68,379
TRTDSpanAges: 40-59
TDSpan757
TDSpan970
TDSpan54,218
TRTDSpanAges: 60-79
TDSpan378
TDSpan499
TDSpan27,197
TRTDSpanAges: 80 and over
TDSpan142
TDSpan196
TDSpan13,831
Span
Note: Not all cases have a reported age or gender reported. Data corrections or updates can result in case records being removed and or updated from past reports and may result in subset totals (i.e., age group, gender) differing from past publicly reported case counts. Data Source: CCM plus Table 2. Summary of recent confirmed cases of COVID-19 in school aged children by age group, August 30, 2020 to January 1, 2021: Ontario TableTRTHSpan
THSpanChange in cases December 31, 2020
THSpanChange in cases January 1, 2021
THSpanCumulative case count from August 30, 2020 to January 1, 2021
Span
TRTDSpanAges: 4 to 8
TDSpan56
TDSpan63
TDSpan3,894
TRTDSpanAges: 9 to 13
TDSpan78
TDSpan113
TDSpan5,507
TRTDSpanAges: 14 to 17
TDSpan103
TDSpan122
TDSpan5,437
Span
Note: Includes all confirmed cases of COVID-19 for specified ages, regardless of school attendance. Data corrections or updates can result in case records being removed and or updated from past reports and may result in subset totals (i.e., age group) differing from past publicly reported case counts. Data Source: CCM plus Table 3. Summary of recent confirmed cases of COVID-19 in long-term care homes: Ontario TableTRTHSpanLong-term care home cases
THSpanChange in cases December 31, 2020
THSpanChange in cases January 1, 2021
THSpanCumulative case count as of January 1, 2021
Span
TRTDSpanResidents
TDSpan116
TDSpan74
TDSpan11,217
TRTDSpanHealth care workers
TDSpan49
TDSpan36
TDSpan4,365
TRTDSpanDeaths among residents
TDSpan23
TDSpan14
TDSpan2,814
TRTDSpanDeaths among health care workers
TDSpan0
TDSpan0
TDSpan8
Span
Note: Information on how long-term care home residents and health care workers are identified is available in the technical notes. Also, the change in cases in these categories may represent existing case records that have been updated. Data Source: CCM plus Time Figure 1. Confirmed cases of COVID-19 by likely acquisition and public health unit reported date: Ontario, January 15, 2020 to January 1, 2021 FigureData Source: CCM plus Figure 2. Confirmed cases of COVID-19 by likely acquisition and approximation of symptom onset date: Ontario, January 15, 2020 to January 1, 2021 Figure Note: Not all cases may have an episode date and those without one are not included in the figure. Episode date is defined and available in the technical notes. Data Source: CCM plus Figure 3. Number of COVID-19 tests completed and percent positivity: Ontario, March 29, 2020 to December 30*, 2020 FigureNote: The number of tests performed does not reflect the number of specimens or persons tested. More than one test may be performed per specimen or per person. As such, the percentage of tests that were positive does not necessarily translate to the number of specimens or persons testing positive. Data Source: The Provincial COVID-19 Diagnostics Network, data reported by member microbiology laboratories. * The daily number of tests completed and percent positivity are not available for December 31, 2020. Severity Figure 4. Confirmed deaths among COVID-19 cases by date of death: Ontario, March 1, 2020 to January 1, 2021 FigureNote: Cases without a death date are not included in the figure. Data Source: CCM plusTable 4. Confirmed cases of COVID-19 by severity: Ontario TableTRTHSpanBlank cell
THSpanCumulative case count as of January 1, 2021
THSpanPercentage of all cases
Span
TRTDSpanCumulative deaths reported (please note there may be a reporting delay for deaths)
TDSpan4,625
TDSpan2.5%
TRTDSpanDeaths reported in ages: 19 and under
TDSpan1
TDSpan< 0.1%
TRTDSpanDeaths reported in ages: 20-39
TDSpan18
TDSpan< 0.1%
TRTDSpanDeaths reported in ages: 40-59
TDSpan177
TDSpan0.3%
TRTDSpanDeaths reported in ages: 60-79
TDSpan1,228
TDSpan4.5%
TRTDSpanDeaths reported in ages: 80 and over
TDSpan3,200
TDSpan23.1%
TRTDSpanEver in ICU
TDSpan1,956
TDSpan1.0%
TRTDSpanEver hospitalized
TDSpan9,921
TDSpan5.3%
Span
Note: Not all cases have an age reported. Data corrections or updates can result in case records being removed and/or updated and may result in totals differing from past publicly reported case counts. Data Source: CCM plus Geography Table 5. Summary of recent confirmed cases of COVID-19 by public health unit and region: Ontario TableTRTHSpanPublic Health Unit Name
THSpanChange in cases December 31, 2020
THSpanChange in cases January 1, 2021
THSpanCumulative case count
THSpanCumulative rate per 100,000 population
Span
TRTDSpanNorthwestern Health Unit
TDSpan4
TDSpan5
TDSpan172
TDSpan196.2
TRTDSpanThunder Bay District Health Unit
TDSpan4
TDSpan4
TDSpan588
TDSpan392.1
TRTDSpanTOTAL NORTH WEST
TDSpan8
TDSpan9
TDSpan760
TDSpan319.8
TRTDSpanAlgoma Public Health
TDSpan1
TDSpan9
TDSpan75
TDSpan65.5
TRTDSpanNorth Bay Parry Sound District Health Unit
TDSpan4
TDSpan2
TDSpan132
TDSpan101.7
TRTDSpanPorcupine Health Unit
TDSpan2
TDSpan-1
TDSpan130
TDSpan155.8
TRTDSpanPublic Health Sudbury & Districts
TDSpan3
TDSpan3
TDSpan280
TDSpan140.7
TRTDSpanTimiskaming Health Unit
TDSpan2
TDSpan1
TDSpan73
TDSpan223.3
TRTDSpanTOTAL NORTH EAST
TDSpan12
TDSpan14
TDSpan690
TDSpan123.4
TRTDSpanOttawa Public Health
TDSpan93
TDSpan81
TDSpan10,241
TDSpan971.0
TRTDSpanEastern Ontario Health Unit
TDSpan25
TDSpan53
TDSpan1,472
TDSpan705.3
TRTDSpanHastings Prince Edward Public Health
TDSpan2
TDSpan14
TDSpan293
TDSpan173.9
TRTDSpanKingston, Frontenac and Lennox & Addington Public Health
TDSpan5
TDSpan8
TDSpan547
TDSpan257.1
TRTDSpanLeeds, Grenville & Lanark District Health Unit
TDSpan5
TDSpan12
TDSpan694
TDSpan400.8
TRTDSpanRenfrew County and District Health Unit
TDSpan1
TDSpan-1
TDSpan238
TDSpan219.1
Span
TableTRTHSpanPublic Health Unit Name
THSpanChange in cases December 31, 2020
THSpanChange in cases January 1, 2021
THSpanCumulative case count
THSpanCumulative rate per 100,000 population
Span
TRTDSpanTOTAL EASTERN
TDSpan131
TDSpan167
TDSpan13,485
TDSpan700.0
TRTDSpanDurham Region Health Department
TDSpan149
TDSpan115
TDSpan7,519
TDSpan1,055.4
TRTDSpanHaliburton, Kawartha, Pine Ridge District Health Unit
TDSpan8
TDSpan20
TDSpan544
TDSpan287.9
TRTDSpanPeel Public Health
TDSpan480
TDSpan713
TDSpan40,497
TDSpan2,521.7
TRTDSpanPeterborough Public Health
TDSpan13
TDSpan20
TDSpan364
TDSpan246.0
TRTDSpanSimcoe Muskoka District Health Unit
TDSpan53
TDSpan58
TDSpan3,699
TDSpan616.9
TRTDSpanYork Region Public Health
TDSpan300
TDSpan395
TDSpan18,029
TDSpan1,470.8
TRTDSpanTOTAL CENTRAL EAST
TDSpan1,003
TDSpan1,321
TDSpan70,652
TDSpan1,576.8
TRTDSpanToronto Public Health
TDSpan499*
TDSpan700
TDSpan59,873
TDSpan1,918.8
TRTDSpanTOTAL TORONTO
TDSpan499*
TDSpan700
TDSpan59,873
TDSpan1,918.8
TRTDSpanChatham-Kent Public Health
TDSpan21
TDSpan9
TDSpan715
TDSpan672.5
TRTDSpanGrey Bruce Health Unit
TDSpan7
TDSpan11
TDSpan465
TDSpan273.7
TRTDSpanHuron Perth Public Health
TDSpan8
TDSpan22
TDSpan711
TDSpan508.7
TRTDSpanLambton Public Health
TDSpan37
TDSpan70
TDSpan856
TDSpan653.6
TRTDSpanMiddlesex-London Health Unit
TDSpan52
TDSpan94
TDSpan3,370
TDSpan664.0
TRTDSpanSouthwestern Public Health
TDSpan71
TDSpan56
TDSpan1,435
TDSpan678.5
TRTDSpanWindsor-Essex County Health Unit
TDSpan175
TDSpan226
TDSpan7,953
TDSpan1,872.0
TRTDSpanTOTAL SOUTH WEST
TDSpan371
TDSpan488
TDSpan15,505
TDSpan917.0
TRTDSpanBrant County Health Unit
TDSpan22
TDSpan26
TDSpan1,026
TDSpan661.1
Span
TableTRTHSpanPublic Health Unit Name
THSpanChange in cases December 31, 2020
THSpanChange in cases January 1, 2021
THSpanCumulative case count
THSpanCumulative rate per 100,000 population
Span
TRTDSpanCity of Hamilton Public Health Services
TDSpan111
TDSpan171
TDSpan6,300
TDSpan1,063.9
TRTDSpanHaldimand-Norfolk Health Unit
TDSpan29
TDSpan36
TDSpan939
TDSpan823.1
TRTDSpanHalton Region Public Health
TDSpan78
TDSpan152
TDSpan5,880
TDSpan949.8
TRTDSpanNiagara Region Public Health
TDSpan101
TDSpan166
TDSpan4,204
TDSpan889.8
TRTDSpanRegion of Waterloo Public Health and Emergency Services
TDSpan51
TDSpan58
TDSpan5,976
TDSpan1,022.7
TRTDSpanWellington-Dufferin-Guelph Public Health
TDSpan60
TDSpan55
TDSpan2,708
TDSpan868.2
TRTDSpanTOTAL CENTRAL WEST
TDSpan452
TDSpan664
TDSpan27,033
TDSpan948.8
TRTDSpanTOTAL ONTARIO
TDSpan2,476
TDSpan3,363
TDSpan187,998
TDSpan1,264.8
Span
Notes: Health units with data corrections or updates could result in records being removed from totals resulting in negative counts. Data Source: CCM plus * Due to a data issue, cases reported on December 31, 2020 for Toronto Public Health are under-reported in this table. This issue also affects overall case counts for Ontario. Outbreaks Table 6. Summary of recent confirmed COVID-19 outbreaks reported in long-term care homes, retirement homes and hospitals by status: Ontario TableTRTHSpanInstitution type
THSpanChange in outbreaks December 31, 2020
THSpanChange in outbreaks January 1, 2021
THSpanNumber of ongoing outbreaks
THSpanCumulative number of outbreaks reported
Span
TRTDSpanLong-term care homes
TDSpan10
TDSpan15
TDSpan216
TDSpan938
TRTDSpanRetirement homes
TDSpan10
TDSpan3
TDSpan120
TDSpan493
TRTDSpanHospitals
TDSpan1
TDSpan4
TDSpan55
TDSpan246
Span
Note: Ongoing outbreaks include all outbreaks that are ‘Open’ in CCM plus without a ‘Declared Over Date’ recorded, or where the outbreak started more than five months ago, even for outbreaks where the Outbreak Status value selected in CCM/iPHIS is 'OPEN'. The start of the outbreak is determined by the onset date of first case, or if missing the outbreak reported date, or else if that is also missing, then the outbreak created date. Data Source: CCM plus Technical Notes Data Sources The data for this report were based on: The data for this report were based on: The data for this report were based on:
Information extracted from the Ontario Ministry of Health (Ministry) integrated Public Health Information System (iPHIS) database for Toronto Public Health as of January 1, 2021 at 1 p.m. Information extracted from the Ontario Ministry of Health (Ministry) integrated Public Health Information System (iPHIS) database for Toronto Public Health as of January 1, 2021 at 1 p.m.
Information successfully uploaded to the Ministry from Local Systems: Toronto Public Health (Coronavirus Rapid Entry System) CORES as of January 1, 2021 at 2 p.m. Information successfully uploaded to the Ministry from Local Systems: Toronto Public Health (Coronavirus Rapid Entry System) CORES as of January 1, 2021 at 2 p.m.
Information successfully extracted from the Public Health Case and Contact Management Solution (CCM) for all other PHUs by PHO as of January 1, 2021 at 1 p.m. Information successfully extracted from the Public Health Case and Contact Management Solution (CCM) for all other PHUs by PHO as of January 1, 2021 at 1 p.m.
CCM and CCM plus (which includes CCM, iPHIS, and CORES) are dynamic disease reporting systems, which allow ongoing updates to data previously entered. As a result, data extracted from CCM and the Local Systems represent a snapshot at the time of extraction and may differ from previous or subsequent reports. CCM and CCM plus (which includes CCM, iPHIS, and CORES) are dynamic disease reporting systems, which allow ongoing updates to data previously entered. As a result, data extracted from CCM and the Local Systems represent a snapshot at the time of extraction and may differ from previous or subsequent reports.
Ontario population projection data for 2020 were sourced from Ministry, IntelliHEALTH Ontario. Data were extracted on November 26, 2019. Ontario population projection data for 2020 were sourced from Ministry, IntelliHEALTH Ontario. Data were extracted on November 26, 2019.
COVID-19 test data were based on information from The Provincial COVID-19 Diagnostics Network, reported by member microbiology laboratories. COVID-19 test data were based on information from The Provincial COVID-19 Diagnostics Network, reported by member microbiology laboratories.
Data Caveats The data only represent cases reported to public health units and recorded in CCM plus. As a result, all counts will be subject to varying degrees of underreporting due to a variety of factors, such as disease awareness and medical care seeking behaviours, which may depend on severity of illness, clinical practice, changes in laboratory testing, and reporting behaviours. The data only represent cases reported to public health units and recorded in CCM plus. As a result, all counts will be subject to varying degrees of underreporting due to a variety of factors, such as disease awareness and medical care seeking behaviours, which may depend on severity of illness, clinical practice, changes in laboratory testing, and reporting behaviours. The data only represent cases reported to public health units and recorded in CCM plus. As a result, all counts will be subject to varying degrees of underreporting due to a variety of factors, such as disease awareness and medical care seeking behaviours, which may depend on severity of illness, clinical practice, changes in laboratory testing, and reporting behaviours.
Lags in CCM plus data entry due to weekend staffing may result in lower case counts than would otherwise be recorded. Lags in CCM plus data entry due to weekend staffing may result in lower case counts than would otherwise be recorded.
Only cases meeting the confirmed case classification as listed in the MOH Only cases meeting the confirmed case classification as listed in the MOH Only cases meeting the confirmed case classification as listed in the MOH COVID-19 case definitionCOVID-19 case definition
are included in the report counts from CCM plus. This includes persons with a positive detection of serum/plasma immunoglobulin G (IgG) antibodies to SARS-CoV-2, which was added to the confirmed case definition on August 6, 2020.
The number of tests performed does not reflect the number of specimens or persons tested. More than one test may be performed per specimen or per person. As such, the percentage of tests that were positive does not necessarily translate to the number of specimens or persons testing positive. The number of tests performed does not reflect the number of specimens or persons tested. More than one test may be performed per specimen or per person. As such, the percentage of tests that were positive does not necessarily translate to the number of specimens or persons testing positive.
Reported date is the date the case was reported to the public health unit. Reported date is the date the case was reported to the public health unit.
Case episode date is based on an estimate of the best date of disease onset. This date is calculated based on either the date of symptom onset, specimen collection/test date, or the date reported to the public health unit. Case episode date is based on an estimate of the best date of disease onset. This date is calculated based on either the date of symptom onset, specimen collection/test date, or the date reported to the public health unit. Case episode date is based on an estimate of the best date of disease onset. This date is calculated based on either the date of symptom onset, specimen collection/test date, or the date reported to the public health unit.
Resolved cases are determined only for COVID-19 cases that have not died. Cases that have died are considered fatal and not resolved. The following cases are classified as resolved: Resolved cases are determined only for COVID-19 cases that have not died. Cases that have died are considered fatal and not resolved. The following cases are classified as resolved:
Cases that are reported as ‘recovered’ in CCM Cases that are reported as ‘recovered’ in CCM
Cases that are not hospitalized and are 14 days past their episode date Cases that are not hospitalized and are 14 days past their episode date
Cases that are currently hospitalized (no hospital end date entered) and have a status of ‘closed’ in CCM (indicating public health unit follow-up is complete) and are 14 days past their symptom onset date or specimen collection date Cases that are currently hospitalized (no hospital end date entered) and have a status of ‘closed’ in CCM (indicating public health unit follow-up is complete) and are 14 days past their symptom onset date or specimen collection date
Hospitalization includes all cases for which a hospital admission date was reported at the time of data extraction. It includes cases that have been discharged from hospital as well as cases that are currently hospitalized. Emergency room visits are not included in the number of reported hospitalizations. Hospitalization includes all cases for which a hospital admission date was reported at the time of data extraction. It includes cases that have been discharged from hospital as well as cases that are currently hospitalized. Emergency room visits are not included in the number of reported hospitalizations.
ICU admission includes all cases for which an ICU admission date was reported at the time of data extraction. It is a subset of the count of hospitalized cases. It includes cases that have been treated or that are currently being treated in an ICU. ICU admission includes all cases for which an ICU admission date was reported at the time of data extraction. It is a subset of the count of hospitalized cases. It includes cases that have been treated or that are currently being treated in an ICU.
Orientation of case counts by geography is based on the diagnosing health unit (DHU). DHU refers to the case's public health unit of residence at the time of illness onset and not necessarily the location of exposure. Cases for which the DHU was reported as MOH (to signify a case that is not a resident of Ontario) have been excluded from the analyses. Orientation of case counts by geography is based on the diagnosing health unit (DHU). DHU refers to the case's public health unit of residence at the time of illness onset and not necessarily the location of exposure. Cases for which the DHU was reported as MOH (to signify a case that is not a resident of Ontario) have been excluded from the analyses.
Likely source of acquisition is determined by examining the epidemiologic link and epidemiologic link status fields in CCM and local systems. If no epidemiologic link is identified in those fields the risk factor fields are examined to determine whether a case travelled, was associated with a confirmed outbreak, was a contact of a case, had no known epidemiological link (sporadic community transmission) or was reported to have an unknown source/no information was reported. Some cases may have no informati Likely source of acquisition is determined by examining the epidemiologic link and epidemiologic link status fields in CCM and local systems. If no epidemiologic link is identified in those fields the risk factor fields are examined to determine whether a case travelled, was associated with a confirmed outbreak, was a contact of a case, had no known epidemiological link (sporadic community transmission) or was reported to have an unknown source/no information was reported. Some cases may have no informati
For cases with an episode date on or after April 1, 2020: Outbreak-associated > close contact of a confirmed case > travel > no known epidemiological link > information missing or unknown For cases with an episode date on or after April 1, 2020: Outbreak-associated > close contact of a confirmed case > travel > no known epidemiological link > information missing or unknown
For cases with an episode date before April 1, 2020: Travel > outbreak-associated > close contact of a confirmed case > no known epidemiological link > information missing or unknown For cases with an episode date before April 1, 2020: Travel > outbreak-associated > close contact of a confirmed case > no known epidemiological link > information missing or unknown
Deaths are determined by using the outcome field in CCM plus. Any case marked ‘Fatal’ is included in the deaths data. The CCM field Type of Death is not used to further categorize the data. Deaths are determined by using the outcome field in CCM plus. Any case marked ‘Fatal’ is included in the deaths data. The CCM field Type of Death is not used to further categorize the data.
The date of death is determined using the outcome date field for cases marked as ‘Fatal’ in the outcome field. The date of death is determined using the outcome date field for cases marked as ‘Fatal’ in the outcome field. The date of death is determined using the outcome date field for cases marked as ‘Fatal’ in the outcome field.
COVID-19 cases from CCM plus for which the Classification and/or Disposition was reported as ENTERED IN ERROR, DOES NOT MEET DEFINITION, IGNORE, DUPLICATE, or any variation on these values have been excluded. The provincial case count for COVID-19 includes cases that are counted once across all systems from which the case data are obtained. Duplicate records may exist if these records were not identified and resolved prior to data upload to the Ministry. COVID-19 cases from CCM plus for which the Classification and/or Disposition was reported as ENTERED IN ERROR, DOES NOT MEET DEFINITION, IGNORE, DUPLICATE, or any variation on these values have been excluded. The provincial case count for COVID-19 includes cases that are counted once across all systems from which the case data are obtained. Duplicate records may exist if these records were not identified and resolved prior to data upload to the Ministry.
Ongoing outbreaks include all outbreaks that are ‘Open’ in CCM plus without a ‘Declared Over Date’ recorded, or where the outbreak started more than five months ago, even for outbreaks where the Outbreak Status value selected in CCM/iPHIS is 'OPEN'. The start of the outbreak is determined by the onset date of first case, or if missing the outbreak reported date, or else if that is also missing, then the outbreak created date. Ongoing outbreaks include all outbreaks that are ‘Open’ in CCM plus without a ‘Declared Over Date’ recorded, or where the outbreak started more than five months ago, even for outbreaks where the Outbreak Status value selected in CCM/iPHIS is 'OPEN'. The start of the outbreak is determined by the onset date of first case, or if missing the outbreak reported date, or else if that is also missing, then the outbreak created date.
‘Long-term care home residents’ includes cases that reported ‘Yes’ to the risk factor ‘Resident of a long-term care home’; or ‘Yes’ to the risk factor ‘Resident of nursing home or other chronic care facility’ and reported to be part of an outbreak assigned as a long-term care home (via the Outbreak number or case comments field); or were reported to be part of an outbreak assigned as a long-term care home (via the outbreak number or case comments field) with an age over 70 years and did not report ‘No’ t ‘Long-term care home residents’ includes cases that reported ‘Yes’ to the risk factor ‘Resident of a long-term care home’; or ‘Yes’ to the risk factor ‘Resident of nursing home or other chronic care facility’ and reported to be part of an outbreak assigned as a long-term care home (via the Outbreak number or case comments field); or were reported to be part of an outbreak assigned as a long-term care home (via the outbreak number or case comments field) with an age over 70 years and did not report ‘No’ t
The ‘health care workers’ variable includes cases that reported ‘Yes’ to any of the occupation of health care worker, doctor, nurse, dentist, dental hygienist, midwife, other medical technicians, personal support worker, respiratory therapist, first responder. The ‘health care workers’ variable includes cases that reported ‘Yes’ to any of the occupation of health care worker, doctor, nurse, dentist, dental hygienist, midwife, other medical technicians, personal support worker, respiratory therapist, first responder.
‘Health care workers associated with long-term care outbreaks’ includes ‘health care workers’ reported to be part of an outbreak assigned as a long-term care home (via the outbreak number or case comments field). Excludes cases that reported ‘Yes’ to risk factors ‘Resident of long-term care home’ or ‘Resident of nursing home or other chronic care facility’ and ‘Yes’ to the calculated ‘health care workers’ variable. ‘Health care workers associated with long-term care outbreaks’ includes ‘health care workers’ reported to be part of an outbreak assigned as a long-term care home (via the outbreak number or case comments field). Excludes cases that reported ‘Yes’ to risk factors ‘Resident of long-term care home’ or ‘Resident of nursing home or other chronic care facility’ and ‘Yes’ to the calculated ‘health care workers’ variable.
Percent change is calculated by taking the difference between the current period (i.e., daily count or sum of the daily count over a 7-day period) and previous period (i.e., daily count or sum of the daily count over a 7-day period), divided by the previous period. Percent change is calculated by taking the difference between the current period (i.e., daily count or sum of the daily count over a 7-day period) and previous period (i.e., daily count or sum of the daily count over a 7-day period), divided by the previous period.
Appendix A Table A1. Weekly rates of confirmed COVID-19 cases per 100,000 population over recent rolling 7-day periods, by reported date and public health unit: Ontario, December 17, 2020 to December 29, 2020 TableTRTHSpanPublic Health Unit Name
THSpanDec 17 to Dec 23
THSpanDec 18 to Dec 24
THSpanDec 19 to Dec 25
THSpanDec 20 to Dec 26
THSpanDec 21 to Dec 27
THSpanDec 22 to Dec 28
THSpanDec 23 to Dec 29
THSpan% change from Dec 17-23 to Dec 23-29
Span
TRTDSpanNORTH WEST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanNorthwestern Health Unit
TDSpan11.4
TDSpan19.4
TDSpan19.4
TDSpan22.8
TDSpan24.0
TDSpan19.4
TDSpan19.4
TDSpan+70.2%
TRTDSpanThunder Bay District Health Unit
TDSpan59.3
TDSpan52.0
TDSpan48.0
TDSpan40.0
TDSpan41.3
TDSpan38.0
TDSpan26.0
TDSpan-56.2%
TRTDSpanNORTH EAST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanAlgoma Public Health
TDSpan1.7
TDSpan1.7
TDSpan1.7
TDSpan2.6
TDSpan2.6
TDSpan2.6
TDSpan1.7
TDSpan0.0%
TRTDSpanNorth Bay Parry Sound District Health Unit
TDSpan10.8
TDSpan12.3
TDSpan10.0
TDSpan10.0
TDSpan8.5
TDSpan9.2
TDSpan9.2
TDSpan-14.8%
TRTDSpanPorcupine Health Unit
TDSpan10.8
TDSpan9.6
TDSpan9.6
TDSpan7.2
TDSpan8.4
TDSpan3.6
TDSpan1.2
TDSpan-88.9%
TRTDSpanPublic Health Sudbury & Districts
TDSpan6.0
TDSpan5.5
TDSpan6.5
TDSpan6.5
TDSpan6.0
TDSpan7.0
TDSpan8.0
TDSpan+33.3%
TRTDSpanTimiskaming Health Unit
TDSpan61.2
TDSpan70.4
TDSpan79.5
TDSpan76.5
TDSpan76.5
TDSpan67.3
TDSpan70.4
TDSpan+15.0%
TRTDSpanEASTERN
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanOttawa Public Health
TDSpan29.8
TDSpan31.6
TDSpan37.1
TDSpan34.5
TDSpan38.3
TDSpan40.0
TDSpan46.5
TDSpan+56.0%
Span
TableTRTHSpanPublic Health Unit Name
THSpanDec 17 to Dec 23
THSpanDec 18 to Dec 24
THSpanDec 19 to Dec 25
THSpanDec 20 to Dec 26
THSpanDec 21 to Dec 27
THSpanDec 22 to Dec 28
THSpanDec 23 to Dec 29
THSpan% change from Dec 17-23 to Dec 23-29
Span
TRTDSpanEastern Ontario Health Unit
TDSpan50.3
TDSpan54.1
TDSpan51.7
TDSpan49.4
TDSpan54.1
TDSpan58.0
TDSpan66.6
TDSpan+32.4%
TRTDSpanHastings Prince Edward Public Health
TDSpan16.6
TDSpan14.8
TDSpan11.3
TDSpan9.5
TDSpan9.5
TDSpan8.9
TDSpan10.7
TDSpan-35.5%
TRTDSpanKingston, Frontenac and Lennox & Addington Public Health
TDSpan27.3
TDSpan27.3
TDSpan22.1
TDSpan24.4
TDSpan21.2
TDSpan22.6
TDSpan19.3
TDSpan-29.3%
TRTDSpanLeeds, Grenville & Lanark District Health Unit
TDSpan13.9
TDSpan12.1
TDSpan9.8
TDSpan9.8
TDSpan11.5
TDSpan13.9
TDSpan19.6
TDSpan+41.0%
TRTDSpanRenfrew County and District Health Unit
TDSpan12.9
TDSpan10.1
TDSpan12.0
TDSpan9.2
TDSpan10.1
TDSpan10.1
TDSpan11.0
TDSpan-14.7%
TRTDSpanCENTRAL EAST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanDurham Region Health Department
TDSpan96.6
TDSpan92.2
TDSpan89.4
TDSpan87.9
TDSpan84.1
TDSpan84.9
TDSpan87.9
TDSpan-9.0%
TRTDSpanHaliburton, Kawartha, Pine Ridge District Health Unit
TDSpan25.9
TDSpan26.5
TDSpan25.4
TDSpan22.8
TDSpan21.2
TDSpan20.6
TDSpan21.7
TDSpan-16.2%
TRTDSpanPeel Public Health
TDSpan194.7
TDSpan190.8
TDSpan182.6
TDSpan177.0
TDSpan173.9
TDSpan173.9
TDSpan178.0
TDSpan-8.6%
Span
TableTRTHSpanPublic Health Unit Name
THSpanDec 17 to Dec 23
THSpanDec 18 to Dec 24
THSpanDec 19 to Dec 25
THSpanDec 20 to Dec 26
THSpanDec 21 to Dec 27
THSpanDec 22 to Dec 28
THSpanDec 23 to Dec 29
THSpan% change from Dec 17-23 to Dec 23-29
Span
TRTDSpanPeterborough Public Health
TDSpan18.9
TDSpan21.6
TDSpan31.8
TDSpan30.4
TDSpan33.8
TDSpan31.1
TDSpan30.4
TDSpan+60.8%
TRTDSpanSimcoe Muskoka District Health Unit
TDSpan59.5
TDSpan57.9
TDSpan58.4
TDSpan57.4
TDSpan56.9
TDSpan61.0
TDSpan59.9
TDSpan+0.7%
TRTDSpanYork Region Public Health
TDSpan129.9
TDSpan130.9
TDSpan129.7
TDSpan121.8
TDSpan114.5
TDSpan125.8
TDSpan136.9
TDSpan+5.4%
TRTDSpanTORONTO
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanToronto Public Health
TDSpan145.2
TDSpan141.1
TDSpan141.5
TDSpan146.2
TDSpan142.1
TDSpan147.4
TDSpan153.0
TDSpan+5.4%
TRTDSpanSOUTH WEST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanChatham-Kent Public Health
TDSpan37.6
TDSpan35.7
TDSpan45.1
TDSpan46.1
TDSpan52.7
TDSpan64.0
TDSpan75.2
TDSpan+100.0%
TRTDSpanGrey Bruce Health Unit
TDSpan22.4
TDSpan20.6
TDSpan21.2
TDSpan20.6
TDSpan19.4
TDSpan17.7
TDSpan15.9
TDSpan-29.0%
TRTDSpanHuron Perth Public Health
TDSpan52.2
TDSpan63.0
TDSpan65.1
TDSpan76.6
TDSpan74.4
TDSpan73.7
TDSpan78.0
TDSpan+49.4%
TRTDSpanLambton Public Health
TDSpan77.1
TDSpan77.1
TDSpan81.7
TDSpan104.6
TDSpan115.3
TDSpan125.2
TDSpan123.7
TDSpan+60.4%
TRTDSpanMiddlesex-London Health Unit
TDSpan99.5
TDSpan93.4
TDSpan88.5
TDSpan91.6
TDSpan92.2
TDSpan95.2
TDSpan103.0
TDSpan+3.5%
TRTDSpanSouthwestern Public Health
TDSpan97.9
TDSpan97.9
TDSpan105.4
TDSpan102.1
TDSpan109.2
TDSpan102.6
TDSpan112.1
TDSpan+14.5%
TRTDSpanWindsor-Essex County Health Unit
TDSpan277.1
TDSpan258.2
TDSpan271.4
TDSpan272.1
TDSpan270.5
TDSpan270.5
TDSpan262.7
TDSpan-5.2%
Span
TableTRTHSpanPublic Health Unit Name
THSpanDec 17 to Dec 23
THSpanDec 18 to Dec 24
THSpanDec 19 to Dec 25
THSpanDec 20 to Dec 26
THSpanDec 21 to Dec 27
THSpanDec 22 to Dec 28
THSpanDec 23 to Dec 29
THSpan% change from Dec 17-23 to Dec 23-29
Span
TRTDSpanCENTRAL WEST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanBrant County Health Unit
TDSpan63.1
TDSpan51.5
TDSpan50.3
TDSpan50.3
TDSpan51.5
TDSpan61.2
TDSpan61.2
TDSpan-3.0%
TRTDSpanCity of Hamilton Public Health Services
TDSpan123.1
TDSpan108.4
TDSpan109.1
TDSpan106.7
TDSpan115.2
TDSpan123.1
TDSpan128.2
TDSpan+4.1%
TRTDSpanHaldimand-Norfolk Health Unit
TDSpan71.0
TDSpan76.3
TDSpan72.8
TDSpan57.0
TDSpan60.5
TDSpan53.5
TDSpan60.5
TDSpan-14.8%
TRTDSpanHalton Region Public Health
TDSpan83.5
TDSpan87.9
TDSpan83.7
TDSpan86.4
TDSpan86.4
TDSpan94.7
TDSpan93.4
TDSpan+11.9%
TRTDSpanNiagara Region Public Health
TDSpan125.1
TDSpan131.9
TDSpan114.3
TDSpan109.8
TDSpan117.9
TDSpan121.9
TDSpan127.8
TDSpan+2.2%
TRTDSpanRegion of Waterloo Public Health and Emergency Services
TDSpan110.7
TDSpan109.2
TDSpan104.4
TDSpan97.0
TDSpan91.4
TDSpan88.0
TDSpan93.8
TDSpan-15.3%
TRTDSpanWellington-Dufferin-Guelph Public Health
TDSpan103.6
TDSpan105.5
TDSpan93.6
TDSpan95.2
TDSpan98.4
TDSpan102.9
TDSpan102
TDSpan-1.5%
TRTDSpanTOTAL ONTARIO
TDSpan109.0
TDSpan106.7
TDSpan105.2
TDSpan104.4
TDSpan103.4
TDSpan106.7
TDSpan110.7
TDSpan+1.6%
Span
Note: Rates are based on the sum of the daily case counts during the date ranges specified in each column. Data Source: CCM plus Disclaimer This document was developed by Public Health Ontario (PHO). PHO provides scientific and technical advice to Ontario’s government, public health organizations and health care providers. PHO’s work is guided by the current best available evidence at the time of publication. The application and use of this document is the responsibility of the user. PHO assumes no liability resulting from any such application or use. This document may be reproduced without permission for non-commercial purposes only and provided that appropriate credit is given to PHO. No changes and/or modifications may be made to this document without express written permission from PHO. Citation Ontario Agency for Health Protection and Promotion (Public Health Ontario). Epidemiologic summary: COVID-19 in Ontario – January 15, 2020 to January 1, 2021. Toronto, ON: Queen’s Printer for Ontario; 2021. For Further Information For more information, email For more information, email [email protected]@oahpp.ca
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Public Health Ontario Public Health Ontario is an agency of the Government of Ontario dedicated to protecting and promoting the health of all Ontarians and reducing inequities in health. Public Health Ontario links public health practitioners, front-line health workers and researchers to the best scientific intelligence and knowledge from around the world. For more information about PHO, visit For more information about PHO, visit publichealthontario.capublichealthontario.ca
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Figure