Table 5. Estimated number and proportion of people living with chronic hepatitis C who were unaware of their infection, for the general population and key populations, Canada, 2021.

Population	Estimated number of people living with CHC	Proportion who were unaware (%)			Estimated number of people living with CHC who are unaware			Reference(s)
		Point estimate	Lower bound	Upper bound	Point estimate	Lower bound	Upper bound
General population	214,000	41.5%	34.3%	48.8%	104,000	73,300	104,000	((21,48,49))
PWID, within 12 months	37,000	49.9%	29.0%	70.2%	18,500	10,700	26,000	((32))
People who have ever injected drugs	Insufficient information
People incarcerated in provincial prisonsa	Insufficient information
First Nations	Insufficient information
People incarcerated in federal prisonsb	396	32.7%	28.2%	37.5%	129	112	148	Unpublished data from Correctional Services Canada, 2021 (personal communication, 2024)
Adults in the 1945–1975 birth cohort	157,000	28.9%	15.7%	41.9%	45,200	24,700	65,800	((21,48,49,58))
Immigrants from countries where hepatitis C is common (≥2% seroprevalence)	Insufficient information
Inuit	Insufficient information
Métis	Insufficient information
GBMSM	Insufficient information

Abbreviations; CHC, chronic hepatitis C; GBMSM, gay, bisexual and other men who have sex with men; PWID; people who inject drugs

^a Who were sentenced for two years or more

^b Who were sentenced for less than two years