Fig. 1

Overall, age, and sexual partnering level stratified estimates of HIV incidence, prevalence, and HIV-related mortality among men who have sex with men in Montréal over 1975–2019. The solid line represents the mean of 100 simulations, and the shaded area represents the 90% credible interval. The HIV incidence peaked in 1985, while the prevalence and mortality peaked in 1990 and 1993, respectively. The 35–44 year age group and high sexual partnering group had the highest prevalence, incidence and mortality at the epidemic peak, while the 45–54 year age group had the highest mortality. By 2017, the incidence was still highest within the 35–44 year age group. Subsequent to 1990, the HIV prevalence decreased for all age groups, with the exception of the 55 + year age group for which the prevalence continues to increase