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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 1
Daily Epidemiologic Summary
COVID-19 in Ontario: January 15, 2020 to December 25, 2020
This report includes the most current information available from CCM and other case management systems (CCM plus) as of December 25, 2020.
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 169,411 confirmed cases of COVID-19 in Ontario reported to date.
Compared to the previous day, this represents:
An increase of 2,142 confirmed cases (percent change of -0.8%)
An increase of 38 deaths (percent change of -11.6%)
An increase of 1,913 resolved cases (percent change of -14.5%)
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 December 25, 2020 2
Case Characteristics
Table 1a. Summary of recent confirmed cases of COVID-19: Ontario
Change in cases
December 24
Change in cases
December 25
Percentage change
December 25 compared to December 24
Cumulative case count
as of December 25
Total number of cases 2,159 2,142 -0.8% 169,411
Number of deaths 43 38 -11.6% 4,359
Number resolved 2,237 1,913 -14.5% 145,173
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
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 3
Table 1b. Summary of recent confirmed cases of COVID-19 by age group and gender: Ontario
Change in cases
December 24
Change in cases
December 25
Cumulative case count
as of December 25
Gender: Male 1,039 1,006 83,025
Gender: Female 1,092 1,116 85,314
Ages: 19 and under 283 270 21,812
Ages: 20-39 764 738 61,847
Ages: 40-59 668 633 48,630
Ages: 60-79 314 358 24,381
Ages: 80 and over 128 141 12,699
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 to December 25, 2020: Ontario
Change in cases
December 24
Change in cases
December 25
Cumulative case count from August 30 to
December 25
Ages: 4 to 8 53 49 3,509
Ages: 9 to 13 78 61 4,861
Ages: 14 to 17 60 64 4,727
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 December 25, 2020 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 24
Change in cases
December 25
Cumulative case count as of December 25
Residents 97 80 10,492
Health care workers 48 19 4,135
Deaths among residents 22 17 2,682
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 December 25, 2020 5
Time
Figure 1. Confirmed cases of COVID-19 by likely acquisition and public health unit reported date: Ontario, January 15, 2020 to December 25, 2020
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 6
Figure 2. Confirmed cases of COVID-19 by likely acquisition and approximation of symptom onset date: Ontario, January 15, 2020 to December 25, 2020
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 December 25, 2020 7
Figure 3. Number of COVID-19 tests completed and percent positivity: Ontario, March 29, 2020 to December 23*, 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.
*The daily number of tests completed and percent positivity are not available for December 24, 2020.
Data Source: The Provincial COVID-19 Diagnostics Network, data reported by member microbiology laboratories.
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 8
Severity Figure 4. Confirmed deaths among COVID-19 cases by date of death: Ontario, March 1, 2020 to December 25, 2020
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 December 25, 2020 9
Table 4. Confirmed cases of COVID-19 by severity: Ontario
Blank cell Cumulative case count
as of December 25 Percentage of all
cases
Cumulative deaths reported (please note there may be a reporting delay for deaths)
4,359 2.6%
Deaths reported in ages: 19 and under 1
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 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 24
Change in cases
December 25
Cumulative case count
Cumulative rate per 100,000 population
Northwestern Health Unit 2 5 153 174.5
Thunder Bay District Health Unit 10 4 558 372.1
TOTAL NORTH WEST 12 9 711 299.2
Algoma Public Health 1 0 64 55.9
North Bay Parry Sound District Health Unit
4 8 124 95.6
Porcupine Health Unit 0 0 127 152.2
Public Health Sudbury & Districts 0 2 261 131.1
Timiskaming Health Unit 3 5 56 171.3
TOTAL NORTH EAST 8 15 632 113.0
Ottawa Public Health 54 74 9,650 915.0
Eastern Ontario Health Unit 17 18 1,273 609.9
Hastings Prince Edward Public Health
2 0 261 154.9
Kingston, Frontenac and Lennox & Addington Public Health
7 13 505 237.4
Leeds, Grenville & Lanark District Health Unit
5 2 647 373.6
Renfrew County and District Health Unit
1 5 227 209.0
TOTAL EASTERN 86 112 12,563 652.2
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 11
Public Health Unit Name Change in
cases December 24
Change in cases
December 25
Cumulative case count
Cumulative rate per 100,000 population
Durham Region Health Department 93 67 6,745 946.8
Haliburton, Kawartha, Pine Ridge District Health Unit
7 6 484 256.2
Peel Public Health 385 344 37,130 2312.0
Peterborough Public Health 4 8 297 200.7
Simcoe Muskoka District Health Unit
51 52 3,309 551.9
York Region Public Health 213 262 16,001 1305.4
TOTAL CENTRAL EAST 753 739 63,966 1427.6
Toronto Public Health 616 541 54,909 1759.7
TOTAL TORONTO 616 541 54,909 1759.7
Chatham-Kent Public Health 9 10 618 581.3
Grey Bruce Health Unit 11 1 431 253.7
Huron Perth Public Health 16 28 611 437.2
Lambton Public Health 2 20 596 455.1
Middlesex-London Health Unit 44 50 2,798 551.3
Southwestern Public Health 31 24 1,098 519.2
Windsor-Essex County Health Unit 135 131 6,686 1573.8
TOTAL SOUTH WEST 248 264 12,838 759.3
Brant County Health Unit 3 17 889 572.8
City of Hamilton Public Health Services
77 136 5,475 924.6
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 12
Public Health Unit Name Change in
cases December 24
Change in cases
December 25
Cumulative case count
Cumulative rate per 100,000 population
Haldimand-Norfolk Health Unit 9 12 833 730.2
Halton Region Public Health 96 93 5,232 845.1
Niagara Region Public Health 78 93 3,494 739.5
Region of Waterloo Public Health and Emergency Services
105 67 5,480 937.8
Wellington-Dufferin-Guelph Public Health
68 44 2,389 765.9
TOTAL CENTRAL WEST 436 462 23,792 835.0
TOTAL ONTARIO 2,159 2,142 169,411 1139.7
Notes: Health units with data corrections or updates could result in records being removed from totals resulting in negative counts.
Data Source: CCM plus
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 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 24
Change in outbreaks
December 25
Number of ongoing
outbreaks
Cumulative number of outbreaks reported
Long-term care homes 4 10 181 879
Retirement homes 3 3 99 454
Hospitals 4 2 53 231
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 December 25, 2020 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 December 25, 2020 at 1 p.m.
Information successfully uploaded to the Ministry from Local Systems: Toronto Public Health (Coronavirus Rapid Entry System) CORES as of December 25, 2020 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 December 25, 2020 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 December 25, 2020 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 December 25, 2020 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 December 25, 2020 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 10, 2020 to December 22, 2020
Public Health Unit Name
Dec 10 to
Dec 16
Dec 11 to
Dec 17
Dec 12 to
Dec 18
Dec 13 to
Dec 19
Dec 14 to
Dec 20
Dec 15 to
Dec 21
Dec 16 to
Dec 22
% change from
Dec 10-16 to Dec 16-
22
NORTH WEST
Northwestern Health Unit
3.4 3.4 5.7 5.7 5.7 10.3 11.4 +235.3%
Thunder Bay District Health Unit
32.0 37.3 40.0 44.7 44.0 48.7 58.0 +81.3%
NORTH EAST
Algoma Public Health
0.9 0.0 0.0 0.0 0.0 0.0 0.9 0.0%
North Bay Parry Sound District Health Unit
9.2 10.8 12.3 12.3 12.3 12.3 13.1 +42.4%
Porcupine Health Unit
2.4 3.6 3.6 4.8 3.6 8.4 10.8 +350.0%
Public Health Sudbury & Districts
3.5 4.5 4.0 4.0 4.0 5.0 5.5 +57.1%
Timiskaming Health Unit
15.3 15.3 27.5 33.7 36.7 45.9 55.1 +260.1%
EASTERN
Ottawa Public Health
30.2 30.8 28.2 27.4 26.9 27.1 30.2 0.0%
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 18
Public Health Unit Name
Dec 10 to
Dec 16
Dec 11 to
Dec 17
Dec 12 to
Dec 18
Dec 13 to
Dec 19
Dec 14 to
Dec 20
Dec 15 to
Dec 21
Dec 16 to
Dec 22
% change from
Dec 10-16 to Dec 16-
22
Eastern Ontario Health Unit
58.9 55.6 50.8 44.1 40.7 40.7 45.0 -23.6%
Hastings Prince Edward Public Health
22.0 14.2 16.0 14.8 16.6 14.8 15.4 -30.0%
Kingston, Frontenac and Lennox & Addington Public Health
43.7 40.9 37.6 35.7 35.7 32.4 28.7 -34.3%
Leeds, Grenville & Lanark District Health Unit
31.8 26.6 24.8 21.4 20.8 19.6 17.9 -43.7%
Renfrew County and District Health Unit
17.5 18.4 15.6 15.6 13.8 16.6 16.6 -5.1%
CENTRAL EAST
Durham Region Health Department
87.5 89.4 92.2 89.0 93.5 97.6 97.1 +11.0%
Haliburton, Kawartha, Pine Ridge District Health Unit
30.2 28.1 25.4 24.3 23.8 24.3 23.3 -22.8%
Peel Public Health
194.5 194.7 194.8 201.3 208.6 195.0 190.7 -2.0%
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 19
Public Health Unit Name
Dec 10 to
Dec 16
Dec 11 to
Dec 17
Dec 12 to
Dec 18
Dec 13 to
Dec 19
Dec 14 to
Dec 20
Dec 15 to
Dec 21
Dec 16 to
Dec 22
% change from
Dec 10-16 to Dec 16-
22
Peterborough Public Health
15.5 15.5 16.9 16.2 16.2 19.6 20.3 +31.0%
Simcoe Muskoka District Health Unit
52.4 55.5 57.0 59.5 60.9 62.4 63.4 +21.0%
York Region Public Health
101.6 104.2 115.6 120.8 119.5 124.3 128.0 +26.0%
TORONTO
Toronto Public Health
142.2 145.2 148.0 147.2 150.0 145.2 149.9 +5.4%
SOUTH WEST
Chatham-Kent Public Health
25.4 31.0 25.4 32.0 31.0 32.9 38.6 +52.0%
Grey Bruce Health Unit
15.9 15.9 15.9 17.7 17.7 18.8 21.2 +33.3%
Huron Perth Public Health
60.1 59.4 53.7 51.5 54.4 58.7 52.2 -13.1%
Lambton Public Health
24.4 35.9 41.2 55.7 57.3 64.9 82.5 +238.1%
Middlesex-London Health Unit
54.8 62.1 70.3 76.3 83.7 88.9 100.3 +83.0%
Southwestern Public Health
79.9 80.4 81.3 78.0 77.1 93.6 100.7 +26.0%
Windsor-Essex County Health Unit
213.7 243.4 250.7 267.6 274.2 285.8 288.4 +35.0%
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COVID-19 in Ontario: January 15, 2020 to December 25, 2020 20
Public Health Unit Name
Dec 10 to
Dec 16
Dec 11 to
Dec 17
Dec 12 to
Dec 18
Dec 13 to
Dec 19
Dec 14 to
Dec 20
Dec 15 to
Dec 21
Dec 16 to
Dec 22
% change from
Dec 10-16 to Dec 16-
22
CENTRAL WEST
Brant County Health Unit
70.9 77.3 75.4 69.6 59.3 59.3 59.9 -15.5%
City of Hamilton Public Health Services
115.2 126.0 127.0 121.9 120.1 122.8 127.3 +10.5%
Haldimand-Norfolk Health Unit
44.7 41.2 47.3 60.5 60.5 63.1 61.4 +37.4%
Halton Region Public Health
71.9 74.5 77.5 84.0 85.4 86.7 84.8 +17.9%
Niagara Region Public Health
76.4 79.2 101.6 107.3 109.8 112.8 118.9 +55.6%
Region of Waterloo Public Health and Emergency Services
87.1 87.1 92.2 98.2 98.7 106.1 106.3 +22.0%
Wellington-Dufferin-Guelph Public Health
95.2 94.6 101.0 93.6 91.4 95.5 96.8 +1.7%
TOTAL ONTARIO
97.7 100.6 103.7 105.6 107.5 107.3 109.6 +12.2%
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 December 25, 2020 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 December 25, 2020. Toronto, ON: Queen’s Printer for Ontario; 2020.
For Further Information For more information, email cd@oahpp.ca.
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:cd@oahpp.cahttps://www.publichealthontario.ca/
Structure Bookmarks ArtifactArtifactArtifactDaily Epidemiologic Summary COVID-19 in Ontario: January 15, 2020 to December 25, 2020 This report includes the most current information available from CCM and other case management systems (CCM plus) as of December 25, 2020. 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 169,411 confirmed cases of COVID-19 in Ontario reported to date. There are a total of 169,411 confirmed cases of COVID-19 in Ontario reported to date. There are a total of 169,411 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 2,142 confirmed cases (percent change of -0.8%) An increase of 2,142 confirmed cases (percent change of -0.8%)
An increase of 38 deaths (percent change of -11.6%) An increase of 38 deaths (percent change of -11.6%)
An increase of 1,913 resolved cases (percent change of -14.5%) An increase of 1,913 resolved cases (percent change of -14.5%)
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 24
THSpanChange in cases December 25
THSpanPercentage change December 25 compared to December 24
THSpanCumulative case count as of December 25
Span
TRTDSpanTotal number of cases
TDSpan2,159
TDSpan2,142
TDSpan-0.8%
TDSpan169,411
TRTDSpanNumber of deaths
TDSpan43
TDSpan38
TDSpan-11.6%
TDSpan4,359
TRTDSpanNumber resolved
TDSpan2,237
TDSpan1,913
TDSpan-14.5%
TDSpan145,173
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 Table 1b. Summary of recent confirmed cases of COVID-19 by age group and gender: Ontario TableTRTHSpan
THSpanChange in cases December 24
THSpanChange in cases December 25
THSpanCumulative case count as of December 25
Span
TRTDSpanGender: Male
TDSpan1,039
TDSpan1,006
TDSpan83,025
TRTDSpanGender: Female
TDSpan1,092
TDSpan1,116
TDSpan85,314
TRTDSpanAges: 19 and under
TDSpan283
TDSpan270
TDSpan21,812
TRTDSpanAges: 20-39
TDSpan764
TDSpan738
TDSpan61,847
TRTDSpanAges: 40-59
TDSpan668
TDSpan633
TDSpan48,630
TRTDSpanAges: 60-79
TDSpan314
TDSpan358
TDSpan24,381
TRTDSpanAges: 80 and over
TDSpan128
TDSpan141
TDSpan12,699
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 to December 25, 2020: Ontario TableTRTHSpan
THSpanChange in cases December 24
THSpanChange in cases December 25
THSpanCumulative case count from August 30 to December 25
Span
TRTDSpanAges: 4 to 8
TDSpan53
TDSpan49
TDSpan3,509
TRTDSpanAges: 9 to 13
TDSpan78
TDSpan61
TDSpan4,861
TRTDSpanAges: 14 to 17
TDSpan60
TDSpan64
TDSpan4,727
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 24
THSpanChange in cases December 25
THSpanCumulative case count as of December 25
Span
TRTDSpanResidents
TDSpan97
TDSpan80
TDSpan10,492
TRTDSpanHealth care workers
TDSpan48
TDSpan19
TDSpan4,135
TRTDSpanDeaths among residents
TDSpan22
TDSpan17
TDSpan2,682
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 December 25, 2020 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 December 25, 2020 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 23*, 2020 Figure 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. *The daily number of tests completed and percent positivity are not available for December 24, 2020. Data Source: The Provincial COVID-19 Diagnostics Network, data reported by member microbiology laboratories. Severity Figure 4. Confirmed deaths among COVID-19 cases by date of death: Ontario, March 1, 2020 to December 25, 2020 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 December 25
THSpanPercentage of all cases
Span
TRTDSpanCumulative deaths reported (please note there may be a reporting delay for deaths)
TDSpan4,359
TDSpan2.6%
TRTDSpanDeaths reported in ages: 19 and under
TDSpan1
TDSpan 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 10, 2020 to December 22, 2020 TableTRTHSpanPublic Health Unit Name
THSpanDec 10 to Dec 16
THSpanDec 11 to Dec 17
THSpanDec 12 to Dec 18
THSpanDec 13 to Dec 19
THSpanDec 14 to Dec 20
THSpanDec 15 to Dec 21
THSpanDec 16 to Dec 22
THSpan% change from Dec 10-16 to Dec 16-22
Span
TRTDSpanNORTH WEST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanNorthwestern Health Unit
TDSpan3.4
TDSpan3.4
TDSpan5.7
TDSpan5.7
TDSpan5.7
TDSpan10.3
TDSpan11.4
TDSpan+235.3%
TRTDSpanThunder Bay District Health Unit
TDSpan32.0
TDSpan37.3
TDSpan40.0
TDSpan44.7
TDSpan44.0
TDSpan48.7
TDSpan58.0
TDSpan+81.3%
TRTDSpanNORTH EAST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanAlgoma Public Health
TDSpan0.9
TDSpan0.0
TDSpan0.0
TDSpan0.0
TDSpan0.0
TDSpan0.0
TDSpan0.9
TDSpan0.0%
TRTDSpanNorth Bay Parry Sound District Health Unit
TDSpan9.2
TDSpan10.8
TDSpan12.3
TDSpan12.3
TDSpan12.3
TDSpan12.3
TDSpan13.1
TDSpan+42.4%
TRTDSpanPorcupine Health Unit
TDSpan2.4
TDSpan3.6
TDSpan3.6
TDSpan4.8
TDSpan3.6
TDSpan8.4
TDSpan10.8
TDSpan+350.0%
TRTDSpanPublic Health Sudbury & Districts
TDSpan3.5
TDSpan4.5
TDSpan4.0
TDSpan4.0
TDSpan4.0
TDSpan5.0
TDSpan5.5
TDSpan+57.1%
TRTDSpanTimiskaming Health Unit
TDSpan15.3
TDSpan15.3
TDSpan27.5
TDSpan33.7
TDSpan36.7
TDSpan45.9
TDSpan55.1
TDSpan+260.1%
TRTDSpanEASTERN
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanOttawa Public Health
TDSpan30.2
TDSpan30.8
TDSpan28.2
TDSpan27.4
TDSpan26.9
TDSpan27.1
TDSpan30.2
TDSpan0.0%
Span
TableTRTHSpanPublic Health Unit Name
THSpanDec 10 to Dec 16
THSpanDec 11 to Dec 17
THSpanDec 12 to Dec 18
THSpanDec 13 to Dec 19
THSpanDec 14 to Dec 20
THSpanDec 15 to Dec 21
THSpanDec 16 to Dec 22
THSpan% change from Dec 10-16 to Dec 16-22
Span
TRTDSpanEastern Ontario Health Unit
TDSpan58.9
TDSpan55.6
TDSpan50.8
TDSpan44.1
TDSpan40.7
TDSpan40.7
TDSpan45.0
TDSpan-23.6%
TRTDSpanHastings Prince Edward Public Health
TDSpan22.0
TDSpan14.2
TDSpan16.0
TDSpan14.8
TDSpan16.6
TDSpan14.8
TDSpan15.4
TDSpan-30.0%
TRTDSpanKingston, Frontenac and Lennox & Addington Public Health
TDSpan43.7
TDSpan40.9
TDSpan37.6
TDSpan35.7
TDSpan35.7
TDSpan32.4
TDSpan28.7
TDSpan-34.3%
TRTDSpanLeeds, Grenville & Lanark District Health Unit
TDSpan31.8
TDSpan26.6
TDSpan24.8
TDSpan21.4
TDSpan20.8
TDSpan19.6
TDSpan17.9
TDSpan-43.7%
TRTDSpanRenfrew County and District Health Unit
TDSpan17.5
TDSpan18.4
TDSpan15.6
TDSpan15.6
TDSpan13.8
TDSpan16.6
TDSpan16.6
TDSpan-5.1%
TRTDSpanCENTRAL EAST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanDurham Region Health Department
TDSpan87.5
TDSpan89.4
TDSpan92.2
TDSpan89.0
TDSpan93.5
TDSpan97.6
TDSpan97.1
TDSpan+11.0%
TRTDSpanHaliburton, Kawartha, Pine Ridge District Health Unit
TDSpan30.2
TDSpan28.1
TDSpan25.4
TDSpan24.3
TDSpan23.8
TDSpan24.3
TDSpan23.3
TDSpan-22.8%
TRTDSpanPeel Public Health
TDSpan194.5
TDSpan194.7
TDSpan194.8
TDSpan201.3
TDSpan208.6
TDSpan195.0
TDSpan190.7
TDSpan-2.0%
Span
TableTRTHSpanPublic Health Unit Name
THSpanDec 10 to Dec 16
THSpanDec 11 to Dec 17
THSpanDec 12 to Dec 18
THSpanDec 13 to Dec 19
THSpanDec 14 to Dec 20
THSpanDec 15 to Dec 21
THSpanDec 16 to Dec 22
THSpan% change from Dec 10-16 to Dec 16-22
Span
TRTDSpanPeterborough Public Health
TDSpan15.5
TDSpan15.5
TDSpan16.9
TDSpan16.2
TDSpan16.2
TDSpan19.6
TDSpan20.3
TDSpan+31.0%
TRTDSpanSimcoe Muskoka District Health Unit
TDSpan52.4
TDSpan55.5
TDSpan57.0
TDSpan59.5
TDSpan60.9
TDSpan62.4
TDSpan63.4
TDSpan+21.0%
TRTDSpanYork Region Public Health
TDSpan101.6
TDSpan104.2
TDSpan115.6
TDSpan120.8
TDSpan119.5
TDSpan124.3
TDSpan128.0
TDSpan+26.0%
TRTDSpanTORONTO
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanToronto Public Health
TDSpan142.2
TDSpan145.2
TDSpan148.0
TDSpan147.2
TDSpan150.0
TDSpan145.2
TDSpan149.9
TDSpan+5.4%
TRTDSpanSOUTH WEST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanChatham-Kent Public Health
TDSpan25.4
TDSpan31.0
TDSpan25.4
TDSpan32.0
TDSpan31.0
TDSpan32.9
TDSpan38.6
TDSpan+52.0%
TRTDSpanGrey Bruce Health Unit
TDSpan15.9
TDSpan15.9
TDSpan15.9
TDSpan17.7
TDSpan17.7
TDSpan18.8
TDSpan21.2
TDSpan+33.3%
TRTDSpanHuron Perth Public Health
TDSpan60.1
TDSpan59.4
TDSpan53.7
TDSpan51.5
TDSpan54.4
TDSpan58.7
TDSpan52.2
TDSpan-13.1%
TRTDSpanLambton Public Health
TDSpan24.4
TDSpan35.9
TDSpan41.2
TDSpan55.7
TDSpan57.3
TDSpan64.9
TDSpan82.5
TDSpan+238.1%
TRTDSpanMiddlesex-London Health Unit
TDSpan54.8
TDSpan62.1
TDSpan70.3
TDSpan76.3
TDSpan83.7
TDSpan88.9
TDSpan100.3
TDSpan+83.0%
TRTDSpanSouthwestern Public Health
TDSpan79.9
TDSpan80.4
TDSpan81.3
TDSpan78.0
TDSpan77.1
TDSpan93.6
TDSpan100.7
TDSpan+26.0%
TRTDSpanWindsor-Essex County Health Unit
TDSpan213.7
TDSpan243.4
TDSpan250.7
TDSpan267.6
TDSpan274.2
TDSpan285.8
TDSpan288.4
TDSpan+35.0%
Span
TableTRTHSpanPublic Health Unit Name
THSpanDec 10 to Dec 16
THSpanDec 11 to Dec 17
THSpanDec 12 to Dec 18
THSpanDec 13 to Dec 19
THSpanDec 14 to Dec 20
THSpanDec 15 to Dec 21
THSpanDec 16 to Dec 22
THSpan% change from Dec 10-16 to Dec 16-22
Span
TRTDSpanCENTRAL WEST
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TDSpan
TRTDSpanBrant County Health Unit
TDSpan70.9
TDSpan77.3
TDSpan75.4
TDSpan69.6
TDSpan59.3
TDSpan59.3
TDSpan59.9
TDSpan-15.5%
TRTDSpanCity of Hamilton Public Health Services
TDSpan115.2
TDSpan126.0
TDSpan127.0
TDSpan121.9
TDSpan120.1
TDSpan122.8
TDSpan127.3
TDSpan+10.5%
TRTDSpanHaldimand-Norfolk Health Unit
TDSpan44.7
TDSpan41.2
TDSpan47.3
TDSpan60.5
TDSpan60.5
TDSpan63.1
TDSpan61.4
TDSpan+37.4%
TRTDSpanHalton Region Public Health
TDSpan71.9
TDSpan74.5
TDSpan77.5
TDSpan84.0
TDSpan85.4
TDSpan86.7
TDSpan84.8
TDSpan+17.9%
TRTDSpanNiagara Region Public Health
TDSpan76.4
TDSpan79.2
TDSpan101.6
TDSpan107.3
TDSpan109.8
TDSpan112.8
TDSpan118.9
TDSpan+55.6%
TRTDSpanRegion of Waterloo Public Health and Emergency Services
TDSpan87.1
TDSpan87.1
TDSpan92.2
TDSpan98.2
TDSpan98.7
TDSpan106.1
TDSpan106.3
TDSpan+22.0%
TRTDSpanWellington-Dufferin-Guelph Public Health
TDSpan95.2
TDSpan94.6
TDSpan101.0
TDSpan93.6
TDSpan91.4
TDSpan95.5
TDSpan96.8
TDSpan+1.7%
TRTDSpanTOTAL ONTARIO
TDSpan97.7
TDSpan100.6
TDSpan103.7
TDSpan105.6
TDSpan107.5
TDSpan107.3
TDSpan109.6
TDSpan+12.2%
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 December 25, 2020. Toronto, ON: Queen’s Printer for Ontario; 2020. For Further Information For more information, email For more information, email cd@oahpp.cacd@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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