Sexually transmitted and blood-borne infections: Surveillance data dashboard: About

Health surveillance data on chlamydia, gonorrhea, and hepatitis B and C in Canada.

  • Last updated: 2026-06-01

Welcome to the Sexually transmitted and blood-borne infections (STBBI) surveillance data dashboard. This dashboard is mainly for surveillance professionals and researchers. This tab gives an overview of the dashboard, including sources, methodology, limitations, and additional resources on STBBI surveillance. We recommend reviewing this tab before consulting the other tabs for detailed STBBI data.

On this page

What is surveillance

The term "surveillance" describes public health activities to understand trends in infectious diseases. We recognize that "surveillance" is also used by law enforcement, private security, and other parties for a different purpose. As a result, the term can raise discomfort or have negative meanings for some individuals and communities. This may be especially true for those who are racialized, 2SLGBTQI+, people who use drugs, people experiencing homelessness, and other marginalized populations.

For public health STBBI surveillance, we collect the minimum amount of data necessary. Only provincial or territorial public health authorities have access to personal, identifiable information (such as name or health card number). Identifiable information is used only to provide health services. They remove this information before sending data to national systems. All data are stored securely and access to it is highly restricted. The reports created using national data are about trends, not individual people.

Dashboard overview

The STBBI surveillance data dashboard is an interactive tool to explore data. It is managed by the STBBI surveillance division of the Public Health Agency of Canada (PHAC). Launched in 2026, the platform provides easy access to national, provincial and territorial STBBI data. The dashboard has visuals of STBBI analyses and the data are available to download.

The STBBI surveillance data dashboard has data for:

  • chlamydia
  • gonorrhea
  • hepatitis B
  • hepatitis C

Data on syphilis, HIV, mpox, and from estimates will eventually be added to this dashboard.

Data on antimicrobial-resistant gonorrhea are available from the Enhanced Surveillance of Antimicrobial-resistant Gonorrhea system (ESAG) dashboard.

Learn more about STBBI surveillance in Canada. We also publish an STBBI indicator framework with key indicators.

Information on the dashboard

The STBBI surveillance data dashboard displays annual and 10-year trends for the case counts, rates, and proportions (%). This includes the number of infections reported over a given period. Data are updated annually. National trends over longer time periods can be found at Notifiable Disease Charts.

Data can be stratified by:

  • age group (national level only)
  • sex
  • case category (see below for definition)
  • national, provincial and territorial, and regional levels (for the Atlantic provinces and the territories only).

Data sources

Data on case counts of chlamydia, gonorrhea, and hepatitis B and C (acute, chronic, and unspecified) are from the Canadian Notifiable Disease Surveillance System (CNDSS). Information about CNDSS methods and case definitions are available from Notifiable Diseases Online.

Population denominator data are from Statistics Canada July 2024 yearly population estimates.

Data analysis

Information about how we categorized and analyzed data.

Case categories

We categorized hepatitis B and C cases according to the following infection types in our analyses:

  • acute
  • chronic
  • unspecified
  • chronic and unspecified (combined)
  • total (the sum of acute, chronic, and unspecified cases)

Annual rate calculations were done for each category. Only the provinces or territories that reported cases for a given year were included. Learn more from Hepatitis B reporting patterns or Hepatitis C reporting patterns.

Population estimates

Some provinces and territories were not included in certain analyses. Their populations were removed from the overall denominator used to calculate corresponding national rates. All age-group and sex rates were calculated per 100,000 population. Reported case counts were divided by the population estimates.

Regions

Some provinces and territories had low case counts and were grouped into regions.

The Atlantic region includes:

  • Newfoundland and Labrador
  • Prince Edward Island
  • Nova Scotia
  • New Brunswick

The territories include:

  • Yukon
  • Northwest Territories
  • Nunavut

We calculated the case counts in each region by summing the cases. Population estimates for the region are the sum of the population estimates for the provinces or territories included in the region.

Sex

Sex and gender may be conflated in the data received by PHAC, through CNDSS, from the provinces and territories. As a result, cases reported as male or female may reflect gender identity rather than sex assigned at birth.

We calculated proportions by sex by dividing the case counts among males or females by the total case count within the same stratum (e.g., geography). Trends by sex (male or female) exclude unknown sex. Total population includes males, females, and unknown sex.

Age group

We calculated proportions by age group by dividing the case count in each age group by the total case count in the same stratum.

World Health Organization (WHO) 2030 global STBBI targets

In 2018, the Government of Canada committed Footnote 1 to the WHO's 2030 global STBBI targets Footnote 2 The targets include a 90% reduction of hepatitis B and C incidence compared with the baseline levels from 2015. Percent changes in case counts and rates for hepatitis B and C were calculated using the 2015 baseline.

Small case counts and privacy

Data are not shown at the provincial and territorial level for reporting years in which case counts range from 1 to 9 for Nunavut and Prince Edward Island and from 1 to 4 for all other jurisdictions. This is to reduce the risk of identifying individuals. Other data have also been suppressed to prevent the deduction of hidden values. All provincial and territorial data are combined, regardless of count, in the calculation of national or regional values.

Acronyms

Data notes

  • Limitations specific to CNDSS data are available on Notifiable Diseases Online.
  • Information on risk factors is unavailable in CNDSS.
  • Percentage changes were calculated using non-rounded numbers.

Data limitations

The following points impact the interpretation of the data:

  • Only confirmed cases of disease are included in CNDSS and thus on this dashboard.
  • Data presented in this dashboard do not reflect the incidence rate of infection in Canada. Some infections may be asymptomatic, undiagnosed or unreported.
  • For hepatitis B and C, refer to the reporting patterns to know which provinces and territories reported and are included in the national annual rate calculations for a given year.
  • Due to periodic updates of surveillance data, counts and rates for a given year may change over time. There may be differences between data reported by PHAC and by individual provinces and territories. Data reported in provincial and territorial products should be considered more accurate as they are the most current.
  • Due to ongoing updates of historical data, the national counts from data here may not match the totals displayed on Notifiable Diseases Online.
  • Population estimates for a given year are subject to periodic updates, and as a result, rates may change over time.
  • Be cautious when comparing data across time periods or provinces and territories. Surveillance case definitions and infection categories vary by geographic area and change over the years. This may impact trends over time. Cases are classified using provincial or territorial case definitions from the year the case was reported. Additionally, screening, laboratory testing and reporting practices vary across provinces and territories. This can further affect data consistency.
  • Use caution when interpreting small case counts. In provinces and territories with smaller populations, small changes in case counts can lead to large rate changes due to the small population denominators.
  • Data for the years 2020 to 2022 should be interpreted with caution. This is due to the possible impacts of the COVID-19 pandemic on public health surveillance. The pandemic may have impacted demand for and access to STBBI services in Canada, such as prevention, testing, treatment, and supportive services Footnote 3 . Parts of the country had various levels of disruptions due to COVID-19 from 2020 to 2022. The impacts of the COVID-19 pandemic on STBBI services may continue to be experienced to varying extents in different jurisdictions.

Other STBBI resources

Acknowledgements

This dashboard was made possible through the collaboration of federal, provincial and territorial public health partners with PHAC.

Suggested citation

Public Health Agency of Canada. Sexually transmitted and blood-borne infections surveillance data dashboard. Ottawa: Public Health Agency of Canada, June 2026. Available from: https://health-infobase.canada.ca/stbbi/surveillance/

Contact us

For comments or questions regarding this dashboard, or the data presented, please contact us at sti-hep-its@phac-aspc.gc.ca

References

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