covid-19 in ontario: january 15, 2020 to december 30, 2020 · 2020. 12. 31. · december 29...

COVID-19 in Ontario: January 15, 2020 to December 30, 2020 1

Daily Epidemiologic Summary

COVID-19 in Ontario: January 15, 2020 to December 30, 2020

This report includes the most current information available from CCM and other case management systems (CCM plus) as of December 30, 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 182,159 confirmed cases of COVID-19 in Ontario reported to date.

Compared to the previous day, this represents:

An increase of 3,328 confirmed cases (percent change of +13.9%)

An increase of 56 deaths (percent change of +194.7%)

An increase of 2,213 resolved cases (percent change of -1.1%)

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 29

Change in cases

December 30

Percentage change

December 30 compared to December 29

Cumulative case count

as of December 30

Total number of cases 2,923 3,328 +13.9 182,159

Number of deaths 19 56 +194.7 4,530

Number resolved 2,237 2,213 -1.1 156,012

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 29

Change in cases

December 30


as of December 30

Gender: Male 1,441 1,591 89,195

Gender: Female 1,456 1,719 91,818

Ages: 19 and under 386 465 23,562

Ages: 20-39 1,039 1,123 66,256

Ages: 40-59 885 1,037 52,491

Ages: 60-79 458 502 26,320

Ages: 80 and over 159 200 13,493

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 30, 2020: Ontario

Change in cases

December 29

Change in cases

December 30

Cumulative case count from August 30 to

December 30

Ages: 4 to 8 63 67 3,775

Ages: 9 to 13 109 123 5,316

Ages: 14 to 17 96 136 5,212

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 29

Change in cases

December 30

Cumulative case count as of December 30

Residents 105 197 11,027

Health care workers 28 24 4,280

Deaths among residents 12 39 2,777

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 30, 2020



Figure 2. Confirmed cases of COVID-19 by likely acquisition and approximation of symptom onset date: Ontario, January 15, 2020 to December 30, 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 29, 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.


Severity Figure 4. Confirmed deaths among COVID-19 cases by date of death: Ontario, March 1, 2020 to December 30, 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 30 Percentage of all

cases

Cumulative deaths reported (please note there may be a reporting delay for deaths)

4,530 2.5%

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 29

Change in cases

December 30


Cumulative rate per 100,000 population

Northwestern Health Unit 1 0 163 185.9

Thunder Bay District Health Unit 5 1 580 386.8

TOTAL NORTH WEST 6 1 743 312.7

Algoma Public Health 0 0 65 56.8

North Bay Parry Sound District Health Unit

6 0 126 97.1

Porcupine Health Unit 0 1 129 154.6

Public Health Sudbury & Districts 2 8 274 137.7

Timiskaming Health Unit 0 5 70 214.1

TOTAL NORTH EAST 8 14 664 118.7

Ottawa Public Health 68 194 10,067 954.5

Eastern Ontario Health Unit 16 58 1,394 667.9

Hastings Prince Edward Public Health

5 6 277 164.4

Kingston, Frontenac and Lennox & Addington Public Health

4 13 534 251.0

Leeds, Grenville & Lanark District Health Unit

12 10 677 390.9

Renfrew County and District Health Unit

4 6 238 219.1

TOTAL EASTERN 109 287 13,187 684.5



cases December 29

Change in cases

December 30



Durham Region Health Department 158 114 7,255 1,018.4

Haliburton, Kawartha, Pine Ridge District Health Unit

8 9 516 273.1

Peel Public Health 441 431 39,304 2,447.4

Peterborough Public Health 3 8 331 223.7

Simcoe Muskoka District Health Unit

65 83 3,588 598.4

York Region Public Health 408 418 17,334 1,414.1

TOTAL CENTRAL EAST 1,083 1,063 68,328 1,525.0

Toronto Public Health 998 888 58,674 1,880.4

TOTAL TORONTO 998 888 58,674 1,880.4

Chatham-Kent Public Health 21 12 685 644.3

Grey Bruce Health Unit 1 3 447 263.1

Huron Perth Public Health 17 19 681 487.3

Lambton Public Health 40 25 749 571.9

Middlesex-London Health Unit 67 112 3,224 635.2

Southwestern Public Health 46 79 1,308 618.4

Windsor-Essex County Health Unit 144 257 7,552 1,777.7

TOTAL SOUTH WEST 336 507 14,646 866.2

Brant County Health Unit 25 26 978 630.1

City of Hamilton Public Health Services

69 156 6,018 1,016.3



cases December 29

Change in cases

December 30



Haldimand-Norfolk Health Unit 4 12 874 766.1

Halton Region Public Health 114 79 5,650 912.6

Niagara Region Public Health 82 110 3,937 833.3

Region of Waterloo Public Health and Emergency Services

69 127 5,867 1,004.0

Wellington-Dufferin-Guelph Public Health

20 58 2,593 831.3

TOTAL CENTRAL WEST 383 568 25,917 909.6

TOTAL ONTARIO 2,923 3,328 182,159 1,225.5

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 29

Change in outbreaks

December 30

Number of ongoing

outbreaks

Cumulative number of outbreaks reported

Long-term care homes 4 6 204 913

Retirement homes 7 2 109 480

Hospitals 2 5 53 241

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 30, 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 30, 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 30, 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 15, 2020 to December 27, 2020

Public Health Unit Name

Dec 15 to

Dec 21

Dec 16 to

Dec 22

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

% change from

Dec 15-21 to Dec 21-

27

NORTH WEST

Northwestern Health Unit

10.3 11.4 11.4 19.4 19.4 22.8 24.0 +133.0%

Thunder Bay District Health Unit

48.7 58.0 58.0 50.7 46.7 38.7 40.0 -17.9%

NORTH EAST

Algoma Public Health

0.0 0.9 1.7 1.7 1.7 2.6 2.6 N/A

North Bay Parry Sound District Health Unit

13.1 13.9 11.6 13.1 10.0 10.0 8.5 -35.1%

Porcupine Health Unit

8.4 10.8 10.8 9.6 9.6 7.2 8.4 0.0%

Public Health Sudbury & Districts

5.0 5.5 6.0 5.5 6.5 6.5 6.0 +20.0%

Timiskaming Health Unit

45.9 55.1 61.2 70.4 79.5 76.5 76.5 +66.7%

EASTERN

Ottawa Public Health

27.6 30.2 29.8 31.7 37.1 34.4 38.4 +39.1%



Dec 15 to

Dec 21

Dec 16 to

Dec 22

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

% change from


27

Eastern Ontario Health Unit

42.2 47.4 50.3 53.7 51.3 48.9 53.7 +27.3%

Hastings Prince Edward Public Health

14.8 15.4 16.6 14.8 11.3 9.5 10.1 -31.8%

Kingston, Frontenac and Lennox & Addington Public Health

32.4 28.7 27.3 27.3 22.1 24.4 21.2 -34.6%

Leeds, Grenville & Lanark District Health Unit

19.6 17.9 13.9 12.1 9.8 9.8 11.5 -41.3%

Renfrew County and District Health Unit

16.6 16.6 13.8 10.1 12.0 9.2 11.0 -33.7%

CENTRAL EAST

Durham Region Health Department

96.9 96.7 96.4 92.1 89.3 87.7 83.9 -13.4%

Haliburton, Kawartha, Pine Ridge District Health Unit

24.9 23.8 25.4 26.5 25.4 22.8 21.2 -14.9%

Peel Public Health

195.4 191.2 194.7 190.7 182.4 176.6 173.4 -11.3%



Dec 15 to

Dec 21

Dec 16 to

Dec 22

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

% change from


27

Peterborough Public Health

18.9 19.6 18.9 21.6 31.1 29.7 33.1 +75.1%

Simcoe Muskoka District Health Unit

62.4 63.5 59.7 58.2 58.5 57.5 55.5 -11.1%

York Region Public Health

124.2 128.1 129.6 130.7 129.5 121.5 114.3 -8.0%

TORONTO

Toronto Public Health

145.3 149.9 145.2 141.1 141.5 146.2 142.0 -2.3%

SOUTH WEST

Chatham-Kent Public Health

35.7 40.4 37.6 35.7 45.1 46.1 52.7 +47.6%

Grey Bruce Health Unit

18.8 20.6 22.4 20.6 21.2 20.6 19.4 +3.2%

Huron Perth Public Health

58.7 52.9 52.2 63.0 65.1 76.6 74.4 +26.7%

Lambton Public Health

64.9 82.5 77.1 77.1 83.2 104.6 116.1 +78.9%

Middlesex-London Health Unit

88.9 100.3 99.1 93.0 88.1 91.2 91.8 +3.3%

Southwestern Public Health

95.5 104.0 97.9 97.9 105.4 102.1 109.2 +14.3%

Windsor-Essex County Health Unit

287.9 291.2 276.6 257.8 270.7 269.8 263.6 -8.4%



Dec 15 to

Dec 21

Dec 16 to

Dec 22

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

% change from


27

CENTRAL WEST

Brant County Health Unit

60.6 62.5 63.1 51.5 50.3 48.3 49.6 -18.2%

City of Hamilton Public Health Services

121.8 126.3 122.9 108.2 109.1 106.7 115.2 -5.4%

Haldimand-Norfolk Health Unit

62.2 62.2 71.0 76.3 72.8 57.0 60.5 -2.7%

Halton Region Public Health

87.1 84.8 83.3 87.9 83.7 86.4 86.4 -0.8%

Niagara Region Public Health

112.6 118.5 125.1 131.9 114.3 109.8 117.9 +4.7%

Region of Waterloo Public Health and Emergency Services

106.1 106.4 110.7 109.2 104.4 97.0 91.4 -13.9%

Wellington-Dufferin-Guelph Public Health

96.2 97.1 103.6 105.5 93.6 95.2 98.4 +2.3%

TOTAL ONTARIO

107.5 109.8 108.9 106.6 105.1 104.2 103.0 -4.2%

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 30, 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 30, 2020 This report includes the most current information available from CCM and other case management systems (CCM plus) as of December 30, 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 182,159 confirmed cases of COVID-19 in Ontario reported to date. There are a total of 182,159 confirmed cases of COVID-19 in Ontario reported to date. There are a total of 182,159 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 3,328 confirmed cases (percent change of +13.9%) An increase of 3,328 confirmed cases (percent change of +13.9%)

An increase of 56 deaths (percent change of +194.7%) An increase of 56 deaths (percent change of +194.7%)

An increase of 2,213 resolved cases (percent change of -1.1%) An increase of 2,213 resolved cases (percent change of -1.1%)

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 29


THSpanPercentage change December 30 compared to December 29

THSpanCumulative case count as of December 30

Span

TRTDSpanTotal number of cases

TDSpan2,923

TDSpan3,328

TDSpan+13.9

TDSpan182,159

TRTDSpanNumber of deaths

TDSpan19

TDSpan56

TDSpan+194.7

TDSpan4,530

TRTDSpanNumber resolved

TDSpan2,237

TDSpan2,213

TDSpan-1.1

TDSpan156,012

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

TDSpan1,441

TDSpan1,591

TDSpan89,195

TRTDSpanGender: Female

TDSpan1,456

TDSpan1,719

TDSpan91,818

TRTDSpanAges: 19 and under

TDSpan386

TDSpan465

TDSpan23,562

TRTDSpanAges: 20-39

TDSpan1,039

TDSpan1,123

TDSpan66,256

TRTDSpanAges: 40-59

TDSpan885

TDSpan1,037

TDSpan52,491

TRTDSpanAges: 60-79

TDSpan458

TDSpan502

TDSpan26,320

TRTDSpanAges: 80 and over

TDSpan159

TDSpan200

TDSpan13,493

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 30, 2020: Ontario TableTRTHSpan



THSpanCumulative case count from August 30 to December 30

Span

TRTDSpanAges: 4 to 8

TDSpan63

TDSpan67

TDSpan3,775


TDSpan109

TDSpan123

TDSpan5,316


TDSpan96

TDSpan136

TDSpan5,212

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

TDSpan105

TDSpan197

TDSpan11,027

TRTDSpanHealth care workers

TDSpan28

TDSpan24

TDSpan4,280

TRTDSpanDeaths among residents

TDSpan12

TDSpan39

TDSpan2,777

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 30, 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 30, 2020 FigureNote: 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 29, 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. Severity Figure 4. Confirmed deaths among COVID-19 cases by date of death: Ontario, March 1, 2020 to December 30, 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)

TDSpan4,530

TDSpan2.5%

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 15, 2020 to December 27, 2020 TableTRTHSpanPublic Health Unit Name

THSpanDec 15 to Dec 21







THSpan% change from Dec 15-21 to Dec 21-27

Span

TRTDSpanNORTH WEST

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TRTDSpanNorthwestern Health Unit

TDSpan10.3

TDSpan11.4

TDSpan11.4

TDSpan19.4

TDSpan19.4

TDSpan22.8

TDSpan24.0

TDSpan+133.0%

TRTDSpanThunder Bay District Health Unit

TDSpan48.7

TDSpan58.0

TDSpan58.0

TDSpan50.7

TDSpan46.7

TDSpan38.7

TDSpan40.0

TDSpan-17.9%

TRTDSpanNORTH EAST

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TRTDSpanAlgoma Public Health

TDSpan0.0

TDSpan0.9

TDSpan1.7

TDSpan1.7

TDSpan1.7

TDSpan2.6

TDSpan2.6

TDSpanN/A

TRTDSpanNorth Bay Parry Sound District Health Unit

TDSpan13.1

TDSpan13.9

TDSpan11.6

TDSpan13.1

TDSpan10.0

TDSpan10.0

TDSpan8.5

TDSpan-35.1%

TRTDSpanPorcupine Health Unit

TDSpan8.4

TDSpan10.8

TDSpan10.8

TDSpan9.6

TDSpan9.6

TDSpan7.2

TDSpan8.4

TDSpan0.0%

TRTDSpanPublic Health Sudbury & Districts

TDSpan5.0

TDSpan5.5

TDSpan6.0

TDSpan5.5

TDSpan6.5

TDSpan6.5

TDSpan6.0

TDSpan+20.0%

TRTDSpanTimiskaming Health Unit

TDSpan45.9

TDSpan55.1

TDSpan61.2

TDSpan70.4

TDSpan79.5

TDSpan76.5

TDSpan76.5

TDSpan+66.7%

TRTDSpanEASTERN

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TRTDSpanOttawa Public Health

TDSpan27.6

TDSpan30.2

TDSpan29.8

TDSpan31.7

TDSpan37.1

TDSpan34.4

TDSpan38.4

TDSpan+39.1%

Span

TableTRTHSpanPublic Health Unit Name









Span

TRTDSpanEastern Ontario Health Unit

TDSpan42.2

TDSpan47.4

TDSpan50.3

TDSpan53.7

TDSpan51.3

TDSpan48.9

TDSpan53.7

TDSpan+27.3%

TRTDSpanHastings Prince Edward Public Health

TDSpan14.8

TDSpan15.4

TDSpan16.6

TDSpan14.8

TDSpan11.3

TDSpan9.5

TDSpan10.1

TDSpan-31.8%

TRTDSpanKingston, Frontenac and Lennox & Addington Public Health

TDSpan32.4

TDSpan28.7

TDSpan27.3

TDSpan27.3

TDSpan22.1

TDSpan24.4

TDSpan21.2

TDSpan-34.6%

TRTDSpanLeeds, Grenville & Lanark District Health Unit

TDSpan19.6

TDSpan17.9

TDSpan13.9

TDSpan12.1

TDSpan9.8

TDSpan9.8

TDSpan11.5

TDSpan-41.3%

TRTDSpanRenfrew County and District Health Unit

TDSpan16.6

TDSpan16.6

TDSpan13.8

TDSpan10.1

TDSpan12.0

TDSpan9.2

TDSpan11.0

TDSpan-33.7%

TRTDSpanCENTRAL EAST

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TRTDSpanDurham Region Health Department

TDSpan96.9

TDSpan96.7

TDSpan96.4

TDSpan92.1

TDSpan89.3

TDSpan87.7

TDSpan83.9

TDSpan-13.4%

TRTDSpanHaliburton, Kawartha, Pine Ridge District Health Unit

TDSpan24.9

TDSpan23.8

TDSpan25.4

TDSpan26.5

TDSpan25.4

TDSpan22.8

TDSpan21.2

TDSpan-14.9%

TRTDSpanPeel Public Health

TDSpan195.4

TDSpan191.2

TDSpan194.7

TDSpan190.7

TDSpan182.4

TDSpan176.6

TDSpan173.4

TDSpan-11.3%

Span










Span

TRTDSpanPeterborough Public Health

TDSpan18.9

TDSpan19.6

TDSpan18.9

TDSpan21.6

TDSpan31.1

TDSpan29.7

TDSpan33.1

TDSpan+75.1%

TRTDSpanSimcoe Muskoka District Health Unit

TDSpan62.4

TDSpan63.5

TDSpan59.7

TDSpan58.2

TDSpan58.5

TDSpan57.5

TDSpan55.5

TDSpan-11.1%

TRTDSpanYork Region Public Health

TDSpan124.2

TDSpan128.1

TDSpan129.6

TDSpan130.7

TDSpan129.5

TDSpan121.5

TDSpan114.3

TDSpan-8.0%

TRTDSpanTORONTO

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TRTDSpanToronto Public Health

TDSpan145.3

TDSpan149.9

TDSpan145.2

TDSpan141.1

TDSpan141.5

TDSpan146.2

TDSpan142.0

TDSpan-2.3%

TRTDSpanSOUTH WEST

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TRTDSpanChatham-Kent Public Health

TDSpan35.7

TDSpan40.4

TDSpan37.6

TDSpan35.7

TDSpan45.1

TDSpan46.1

TDSpan52.7

TDSpan+47.6%

TRTDSpanGrey Bruce Health Unit

TDSpan18.8

TDSpan20.6

TDSpan22.4

TDSpan20.6

TDSpan21.2

TDSpan20.6

TDSpan19.4

TDSpan+3.2%

TRTDSpanHuron Perth Public Health

TDSpan58.7

TDSpan52.9

TDSpan52.2

TDSpan63.0

TDSpan65.1

TDSpan76.6

TDSpan74.4

TDSpan+26.7%

TRTDSpanLambton Public Health

TDSpan64.9

TDSpan82.5

TDSpan77.1

TDSpan77.1

TDSpan83.2

TDSpan104.6

TDSpan116.1

TDSpan+78.9%

TRTDSpanMiddlesex-London Health Unit

TDSpan88.9

TDSpan100.3

TDSpan99.1

TDSpan93.0

TDSpan88.1

TDSpan91.2

TDSpan91.8

TDSpan+3.3%

TRTDSpanSouthwestern Public Health

TDSpan95.5

TDSpan104.0

TDSpan97.9

TDSpan97.9

TDSpan105.4

TDSpan102.1

TDSpan109.2

TDSpan+14.3%

TRTDSpanWindsor-Essex County Health Unit

TDSpan287.9

TDSpan291.2

TDSpan276.6

TDSpan257.8

TDSpan270.7

TDSpan269.8

TDSpan263.6

TDSpan-8.4%

Span










Span

TRTDSpanCENTRAL WEST

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TDSpan

TRTDSpanBrant County Health Unit

TDSpan60.6

TDSpan62.5

TDSpan63.1

TDSpan51.5

TDSpan50.3

TDSpan48.3

TDSpan49.6

TDSpan-18.2%

TRTDSpanCity of Hamilton Public Health Services

TDSpan121.8

TDSpan126.3

TDSpan122.9

TDSpan108.2

TDSpan109.1

TDSpan106.7

TDSpan115.2

TDSpan-5.4%

TRTDSpanHaldimand-Norfolk Health Unit

TDSpan62.2

TDSpan62.2

TDSpan71.0

TDSpan76.3

TDSpan72.8

TDSpan57.0

TDSpan60.5

TDSpan-2.7%

TRTDSpanHalton Region Public Health

TDSpan87.1

TDSpan84.8

TDSpan83.3

TDSpan87.9

TDSpan83.7

TDSpan86.4

TDSpan86.4

TDSpan-0.8%

TRTDSpanNiagara Region Public Health

TDSpan112.6

TDSpan118.5

TDSpan125.1

TDSpan131.9

TDSpan114.3

TDSpan109.8

TDSpan117.9

TDSpan+4.7%

TRTDSpanRegion of Waterloo Public Health and Emergency Services

TDSpan106.1

TDSpan106.4

TDSpan110.7

TDSpan109.2

TDSpan104.4

TDSpan97.0

TDSpan91.4

TDSpan-13.9%

TRTDSpanWellington-Dufferin-Guelph Public Health

TDSpan96.2

TDSpan97.1

TDSpan103.6

TDSpan105.5

TDSpan93.6

TDSpan95.2

TDSpan98.4

TDSpan+2.3%

TRTDSpanTOTAL ONTARIO

TDSpan107.5

TDSpan109.8

TDSpan108.9

TDSpan106.6

TDSpan105.1

TDSpan104.2

TDSpan103.0

TDSpan-4.2%

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 30, 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 30, 2020 · 2020. 12. 31. · december 29...

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