covid-19 in ontario: january 15, 2020 to december 25, 2020 · grey bruce health unit 11 1 431 253.7...

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


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


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


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.


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.



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.



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



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.



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.


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.



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


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 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



cases December 24

Change in cases

December 25



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



cases December 24

Change in cases

December 25



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.



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.



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


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.


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.


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%



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


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%



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


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%



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


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.



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 [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 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


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




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



THSpanCumulative case count from August 30 to December 25

Span

TRTDSpanAges: 4 to 8

TDSpan53

TDSpan49

TDSpan3,509


TDSpan78

TDSpan61

TDSpan4,861


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




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


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







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









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










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










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 [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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covid-19 in ontario: january 15, 2020 to december 25, 2020 · grey bruce health unit 11 1 431 253.7...

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