COVID-19 In Ontario: January 15, 2020 To April 9, 2021
Daily Epidemiologic SummaryCOVID-19 in Ontario: January 15, 2020 to April 9, 2021This report includes the most current information available from CCM as of April 9, 2021.Please visit the interactive Ontario COVID-19 Data Tool to explore recent COVID-19 data by public healthunit, 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 changein cases is determined by taking the cumulative difference between the current day and the previousday.Highlights There are a total of 382,152 confirmed cases of COVID-19 in Ontario reported to date. Compared to the previous day, this represents: An increase of 3,813 confirmed cases (percent change of -9.8%) An increase of 19 deaths (percent change of 5.6%) An increase of 2,422 resolved cases (percent change of -8.3%)In this document, the term ‘change in cases’ refers to cases publicly reported by the province for a givenday. Data corrections or updates can result in case records being removed and or updated from pastreports and may result in subset totals for updated case counts (i.e., age group, gender) differing fromthe overall updated case counts.The term public health unit reported date in this document refers to the date local public health unitswere first notified of the case.COVID-19 in Ontario: January 15, 2020 to April 9, 20211
Case CharacteristicsTable 1a. Summary of recent confirmed cases of COVID-19: OntarioPercentage changeChange incasesChange incasesApril 8, 2021April 9, 20214,2273,813-9.8%382,152Number of deaths1819 5.6%7,531Number resolved2,6412,422-8.3%343,622Total number of casesApril 9, 2021compared to April 8,2021Cumulative casecountas of April 9, 2021Note: The number of cases publicly reported by the province each day may not align with case counts reported topublic health on a given day; public health unit reported date refers to the date local public health was firstnotified of the case. Data corrections or updates can result in case records being removed and or updated frompast reports.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 20212
Table 1b. Summary of recent confirmed cases of COVID-19 by age group and gender: OntarioChange in casesChange in casesCumulative case countApril 8, 2021April 9, 2021as of April 9, 2021Gender: Male2,1621,887189,272Gender: Female2,0361,909190,66879972656,456Ages: 20-391,5991,444140,220Ages: 40-591,2291,080109,788Ages: 60-7954248953,532Ages: 80 and over577322,071Ages: 19 and underNote: Not all cases have a reported age or gender reported. Data corrections or updates can result in case recordsbeing removed and or updated from past reports and may result in subset totals (i.e., age group, gender) differingfrom past publicly reported case counts.Data Source: CCMTable 2. Summary of recent confirmed cases of COVID-19 in school aged children by agegroup, August 30, 2020 to April 9, 2021: OntarioChange in casesChange in casesApril 8, 2021April 9, 2021Cumulative case countfrom August 30, 2020to April 9, 2021Ages: 4 to 816012710,100Ages: 9 to 1322117513,229Ages: 14 to 1719418913,110Note: Includes all confirmed cases of COVID-19 for specified ages, regardless of school attendance. Datacorrections or updates can result in case records being removed and or updated from past reports and may resultin subset totals (i.e., age group) differing from past publicly reported case counts.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 20213
Table 3. Summary of recent confirmed cases of COVID-19 in long-term care homes: OntarioChange in casesChange in casesApril 8, 2021April 9, 2021Cumulative case countas of April 9, 2021Residents1115,074Health care workers5-36,858Deaths among residents123,907Deaths among health careworkers0010Long-term care home casesNote: Information on how long-term care home residents and health care workers are identified is available in thetechnical notes. Also, the change in cases in these categories may represent existing case records that have beenupdated.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 20214
TimeFigure 1. Confirmed cases of COVID-19 by likely acquisition and public health unit reported date: Ontario, January 15, 2020 toApril 9, 2021Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 20215
Figure 2. Confirmed cases of COVID-19 by likely acquisition and approximation of symptom onset date: Ontario, January 15, 2020to April 9, 2021Note: 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: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 20216
Figure 3. Number of COVID-19 tests completed and percent positivity: Ontario, March 29, 2020 to April 8, 2021Note: 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 perperson. 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.COVID-19 in Ontario: January 15, 2020 to April 9, 20217
SeverityFigure 4. Confirmed deaths among COVID-19 cases by date of death: Ontario, March 1, 2020 to April 9, 2021Note: Cases without a death date are not included in the figure.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 20218
Table 4. Confirmed cases of COVID-19 by severity: OntarioCumulative case countas of April 9, 2021Percentage of allcases7,5312.0%Deaths reported in ages: 19 and under2 0.1%Deaths reported in ages: 20-3935 0.1%Deaths reported in ages: 40-593250.3%Deaths reported in ages: 60-792,1534.0%Deaths reported in ages: 80 and over5,01522.7%Ever in ICU3,2020.8%Ever hospitalized18,1614.8%Blank cellCumulative deaths reported (please note there maybe a reporting delay for deaths)Note: Not all cases have an age reported. Data corrections or updates can result in case records being removedand/or updated and may result in totals differing from past publicly reported case counts.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 20219
GeographyTable 5. Summary of recent confirmed cases of COVID-19 by public health unit and region:OntarioPublic Health Unit NameChange incases April 8,2021Change incases April 9,2021Cumulativecase countCumulative rateper 100,000populationNorthwestern Health Unit912741845.2Thunder Bay District Health Unit7202,9561,971.2TOTAL NORTH WEST16323,6971,555.7Algoma Public Health35259226.3North Bay Parry Sound DistrictHealth Unit44310238.9Porcupine Health Unit812404484.2Public Health Sudbury & Districts23301,641824.5Timiskaming Health Unit1-1129394.6TOTAL NORTH EAST39502,743490.4Ottawa Public Health24628919,2971,829.7Eastern Ontario Health Unit64233,5831,716.7Hastings Prince Edward PublicHealth1618693411.3Kingston, Frontenac and Lennox& Addington Public Health18171,022480.4Leeds, Grenville & Lanark DistrictHealth Unit22121,371791.7Renfrew County and DistrictHealth Unit129483444.6TOTAL EASTERN37836826,4491,373.0COVID-19 in Ontario: January 15, 2020 to April 9, 202110
Change incases April 8,2021Change incases April 9,2021Cumulativecase countCumulative rateper 100,000populationDurham Region HealthDepartment24728115,8682,227.4Haliburton, Kawartha, Pine RidgeDistrict Health Unit16271,303689.6Peel Public Health76266975,4474,698.0Peterborough Public Health1017969654.8Simcoe Muskoka District HealthUnit961138,5481,425.6York Region Public Health53244237,1463,030.4TOTAL CENTRAL EAST1,6631,549139,2813,108.5Toronto Public Health1,218973118,7903,806.9TOTAL TORONTO1,218973118,7903,806.9Chatham-Kent Public Health961,6791,579.2Grey Bruce Health Unit177881518.6Huron Perth Public Health861,4811,059.7Lambton Public Health35193,0062,295.3Middlesex-London Health Unit1591418,2151,618.6Southwestern Public Health24182,9771,407.6Windsor-Essex County HealthUnit693714,3003,366.1TOTAL SOUTH WEST32123432,5391,924.5Brant County Health Unit30272,4261,563.1City of Hamilton Public HealthServices13314613,9662,358.5Public Health Unit NameCOVID-19 in Ontario: January 15, 2020 to April 9, 202111
Change incases April 8,2021Change incases April 9,2021Cumulativecase countCumulative rateper 100,000populationHaldimand-Norfolk Health Unit17281,7451,529.6Halton Region Public Health17411211,6081,875.0Niagara Region Public Health10712010,6022,243.9Region of Waterloo Public Healthand Emergency hPublic Health64985,8111,863.0TOTAL CENTRAL lic Health Unit NameTOTAL ONTARIONotes: Health units with data corrections or updates could result in records being removed from totals resulting innegative counts.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 202112
OutbreaksTable 6. Summary of recent confirmed COVID-19 outbreaks reported in long-term carehomes, retirement homes and hospitals by status: OntarioChange inoutbreaksChange inoutbreaksApril 8, 2021Long-term care homesApril 9, 2021Number ofongoingoutbreaksCumulative number ofoutbreaks reported-3-4481,398Retirement homes-5-433834Hospitals3139483Institution typeNote: Ongoing outbreaks include all outbreaks that are ‘Open’ in CCM without a ‘Declared Over Date’ recorded, orwhere the outbreak started more than five months ago, even for outbreaks where the Outbreak Status valueselected in CCM is 'OPEN'. The start of the outbreak is determined by the onset date of first case, or if missing theoutbreak reported date, or else if that is also missing, then the outbreak created date.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 202113
Variant COVID-19 CasesThe laboratory detection of a variant of concern (VOC) is a multi-step process. Samples that test positivefor SARS-CoV-2 and have a cycle threshold (Ct) value 35 can be tested for mutations common tovariants of concern. If positive for the mutation of interest these samples may then undergo genomicanalyses to identify the VOC. VOC lineages may still be confirmed using genomic analysis despite specificS gene mutation(s) being documented as ‘unable to complete’ due to poor sequence quality at thegenome position.Figure 5. Number of confirmed COVID-19 cases and percent positive for mutations or VOCs:Ontario, February 7, 2021 to April 9, 2021Note: Data used to calculate the number of cases tested for mutations common to VOCs or lineages using genomicanalyses are obtained using information from the Laboratory object in CCM in addition to the data from theInvestigation Subtype field. Therefore, comparisons to counts using only information from the InvestigationSubtype field may not align. The percent of cases due to a VOC may be higher than described in this report. Whileall confirmed COVID-19 cases are included in the denominator, not all cases were able to be tested for VOCs.*VOC not reported category includes cases where mutations common to VOCs or lineages were not detected orwhere testing results were not available/not completed.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 202114
Table 7. Summary of confirmed COVID-19 cases with a mutation or VOC detected: OntarioChange in casesApril 8, 2021Change in casesApril 9, 2021Cumulative case countup to April 9, 2021Lineage B.1.1.7*1,8601,72113,213Lineage B.1.3511076Lineage P.121134N501Y and E484K2961191,823N501Y (E484K unknown)**25731721,735E484K (N501Y negative)5551449E484K (N501Y unknown)136237Variant of ConcernMutationsNote: Interpret the VOC and mutation trends with caution due to the varying time required to complete VOCtesting and/or genomic analysis following the initial positive test for SARS-CoV-2. Due to the nature of the genomicanalysis, test results may be completed in batches. Data corrections or updates can result in case records beingremoved and/or updated and may result in totals differing from past publicly reported case counts. Data forcalculating the change in cases and the cumulative case counts uses data from the Investigation Subtype field only.Changes to the VOC testing algorithm may impact counts and trends. Further details can be found in the datacaveats section.*Includes all confirmed COVID-19 cases where lineage B.1.1.7 was identified by genomic analysis and thosepresumed to be B.1.1.7 based on positive N501Y and negative E484K mutation in the Investigation Subtype field**The category ‘N501Y (E484K unknown)’ mainly consists of results from before the introduction of the E484Ktest. Counts will shift from this category into a VOC lineage category as E484K tests or genomic analysis arecompleted.Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 202115
Figure 6. Confirmed COVID-19 cases with a mutation or VOC detected by public health unitreported date: Ontario, November 29, 2020 to April 9, 2021Note: Reported date is based on the date the case was reported, not the date that the VOC or mutation wasidentified. Further details on testing for variants of concern can be found in the technical notes. Interpret the VOCand mutation trends with caution due to the varying time required to complete testing and/or genomic analysisfollowing the initial positive test for SARS-CoV-2. Data for calculating the change in cases and the cumulative casecount uses data from the Investigation Subtype field only. Data for cases with a B.1.1.7, B.1.351, and P.1 lineagedetected are determined using the Investigation Subtype field only. Changes to the VOC testing algorithm mayimpact counts and trends. Further details can be found in the data caveats section.*Includes all confirmed COVID-19 cases where lineage B.1.1.7 was identified by genomic analysis and thosepresumed to be B.1.1.7 based on positive N501Y and negative E484K mutation. Starting March 22, 2021, specimenstested for the both the N501Y and E484K mutation, and if found to be positive for the N501Y mutation only, are notforwarded for further genomic analysis and presumed to be B.1.1.7.**Mutations includes all confirmed COVID-19 cases with the following mutations detected, reported from theInvestigation Subtype field: N501Y and E484K, N501Y (E484K unknown), E484K (N501Y negative), E484K (N501Yunknown).Data Source: CCMCOVID-19 in Ontario: January 15, 2020 to April 9, 202116
Technical NotesData Sources The data for this report were based on information successfully extracted from the Public HealthCase and Contact Management Solution (CCM) for all PHUs by PHO as of April 9, 2021 at 1 p.m. CCM is a dynamic disease reporting system, which allows ongoing updates to data previouslyentered. As a result, data extracted from CCM represent a snapshot at the time of extractionand 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 DiagnosticsNetwork, reported by member microbiology laboratories.Data Caveats The data only represent cases reported to public health units and recorded in CCM. As a result,all counts will be subject to varying degrees of underreporting due to a variety of factors, suchas disease awareness and medical care seeking behaviours, which may depend on severity ofillness, clinical practice, changes in laboratory testing, and reporting behaviours. Lags in CCM data entry due to weekend staffing may result in lower case counts than wouldotherwise be recorded. Only cases meeting the confirmed case classification as listed in the MOH Case Definition –Coronavirus Disease (COVID-19) document Cases of confirmed reinfection, as defined in the provincial case definitions, are counted asunique investigations. Case classification information may be updated for individuals with a positive result issued froma point-of-care assays. 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 oftests that were positive does not necessarily translate to the number of specimens or personstesting positive. Reported date is the date the case was reported to the public health unit. Case episode date is based on an estimate of the best date of disease onset. This date iscalculated based on either the date of symptom onset, specimen collection/test date, or thedate reported to the public health unit. Resolved cases are determined only for COVID-19 cases that have not died. Cases that have diedare considered fatal and not resolved. The following cases are classified as resolved:COVID-19 in Ontario: January 15, 2020 to April 9, 202117
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 pasttheir symptom onset date or specimen collection date Hospitalization includes all cases for which a hospital admission date was reported at the time ofdata extraction. It includes cases that have been discharged from hospital as well as cases thatare currently hospitalized. Emergency room visits are not included in the number of reportedhospitalizations. ICU admission includes all cases for which an ICU admission date was reported at the time ofdata extraction. It is a subset of the count of hospitalized cases. It includes cases that have beentreated or that are currently being treated in an ICU. Orientation of case counts by geography is based on the diagnosing health unit (DHU). DHUrefers to the case's public health unit of residence at the time of illness onset and notnecessarily the location of exposure. Cases for which the DHU was reported as MOH-PHO (tosignify 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 andepidemiologic link status fields in CCM. If no epidemiologic link is identified in those fields therisk factor fields are examined to determine whether a case travelled, was associated with aconfirmed outbreak, was a contact of a case, had no known epidemiological link (sporadiccommunity transmission) or was reported to have an unknown source/no information wasreported. Some cases may have no information reported if the case is untraceable, was lost tofollow-up or referred to FNIHB. Cases with multiple risk factors were assigned to a single likelyacquisition source group which was determined hierarchically in the following order: For cases with an episode date on or after April 1, 2020: Outbreak-associated closecontact of a confirmed case travel no known epidemiological link informationmissing or unknown For cases with an episode date before April 1, 2020: Travel outbreak-associated closecontact of a confirmed case no known epidemiological link information missing orunknownDeaths are determined by using the outcome field in CCM. Any case marked ‘Fatal’ is included inthe 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 for which the Classification and/or Disposition was reported asENTERED IN ERROR, DOES NOT MEET DEFINITION, IGNORE, DUPLICATE or any variation on thesevalues have been excluded. The provincial case count for COVID-19 may include some duplicaterecords, if these records were not identified and resolved.COVID-19 in Ontario: January 15, 2020 to April 9, 202118
COVID-19 in Ontario: January 15, 2020 to April 9, 2021 6 Figure 2. Confirmed cases of COVID-19 by likely acquisition and approximation of symptom onset date: Ontario, January 15, 2020 to April 9, 2021 . Note: Not all cases may have an episode date and those without one are not included in the
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Apr 17, 2021 · COVID-19 in Ontario: January 15, 2020 to April 16, 2021 16 Figure 6. Confirmed COVID-19 cases with a mutation or VOC detected by public health unit reported date: Ontario, November 29, 2020 to April 16, 2021 . Note: Reported date is based on the date the case was report
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