COVID-19 Data and Surveillance

This interactive tool explores the evolution and spread of SARS-CoV-2 using genomic data produced and analyzed at Public Health Ontario. The tool is intended for genomics researchers and experts, epidemiologists, virologists and public health experts.

This report provides a focused analysis of confirmed COVID-19 cases among vaccinated long-term care home and retirement home health care workers and residents in Ontario.

PHO is using serosurveillance to better understand what proportion of the Ontario population has COVID-19 antibodies and to identify hot spots and high risk groups.

This epidemiological summary is the second in a series presenting information on COVID-19 cases with a focus on outcomes resulting in hospitalization or death. It examines differences between waves 1, 2, 3 and 4, as well as by age groups.

An epidemiologic summary of cumulative confirmed COVID-19 outbreaks and outbreak-associated cases in Ontario by setting, from February 16, 2020 to June 12, 2021.

This quick epidemiological summary presents information on COVID-19 cases with a focus on outcomes resulting in hospitalization or death. It examines differences between waves 1, 2, 3 and 4 over time, as well as, by age groups.

A summary of confirmed COVID-19 cases and outbreaks reported in congregate living settings (group homes/supportive housing, shelters, correctional facilities, short-term accommodation and other congregate settings) in Ontario.

This report includes estimates of the incidence, prevalence, and growth of SARS-CoV-2 variants in Ontario based on mutation profiles (N501Y and E484K).

A focused analysis of transmission patterns, testing strategy, case detection and severe outcomes of COVID-19 cases in Ontario. We review changes over time within the context of key public health measures.

This report provides a focused analysis of laboratory-confirmed COVID-19 cases in children reported in Ontario, as per the Ministry of Health’s case definition.

An analysis of COVID-19 case characteristics among health care workers including trends, geography and severity.

This report provides a focused analysis on confirmed outbreaks in elementary and secondary schools in Ontario from August 30, 2020 to March 13, 2021, as well as cases associated with these outbreaks.

This report combines individual case data with neighbourhood-level data on socio-economic status to assess how COVID-19 impacts Ontario neighbourhoods differently.

This report provides a focused analysis of the severity of illness among reported laboratory-confirmed COVID-19 cases in Ontario from January 15 to May 14, 2020.

This report provides estimates of the proportion of infections that are identified as cases in Ontario by age group, up to May 17, 2020.

Descriptive summary of COVID-19 variant of concern cases circulating in Ontario.

This report explores neighbourhood-level trends among laboratory-confirmed COVID-19 cases in Ontario who do not reside in long-term care, from a health equity perspective. The report uses data from January 15 to May 14, 2020.

This report provides a focused analysis of confirmed COVID-19 cases and outbreaks reported among long-term care home (LTCH) residents and health care workers (HCW) in Ontario.

This report provides a summary of confirmed adverse events following immunization (AEFIs) managed as anaphylaxis that occurred following a COVID-19 vaccines in Ontario.