Methods to estimate the number of people living with undiagnosed HIV
Key take-home messages
- At the end of 2016, the Public Health Agency of Canada estimated that 14% of 63,110 individuals living with HIV in Canada were undiagnosed.
- Different types of data can be used across a variety of methodologies to estimate the undiagnosed proportion of people living with HIV.
- The proportion of individuals living with HIV in Canada who were undiagnosed in 2016 was estimated using a complex statistical method known as “back-calculating”, which requires reliable data on HIV diagnoses and deaths from previous years.
- Of the 21% of people living with HIV in Canada in 2014 who were undiagnosed, approximately 18% were attributed to the men who have sex with men exposure category, 20% to injection drug use, and 28% to heterosexual contact.
The Ontario HIV Treatment Network: Rapid Response Service
- Epidemiology and Determinants of Health
- General HIV+ population