ArticleCanadian journal of public health = Revue canadienne de sante publique2025
The evolving HIV epidemic in Ontario, Canada: A retrospective analysis of new HIV diagnoses to identify subpopulations with persistent risk of HIV transmission.
Article in Canadian journal of public health = Revue canadienne de sante publique, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- The Intersection of Racial Identity and Immigration Status on Patterns of Condom Use, HIV/STI Testing, and Concurrent Sexual Partnerships in Canada.AIDS and behavior · 2026Article
- The risk of HIV and HCV transmission in Canadians living with coinfection before, during, and after the COVID pandemic: A prospective cohort study.Canadian journal of public health = Revue canadienne de sante publique · 2026Article
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe objective of this study was to characterize new HIV diagnoses in key Ontario cities, in order to understand current drivers of continued HIV transmission to inform HIV testing and prevention efforts.
methodsChart reviews were carried out at four clinical sites in Ontario, Canada. The study population included individuals who were diagnosed with HIV in Ottawa, Hamilton, and Toronto between January 1, 2018, and December 31, 2020, and had no previous evidence of HIV documented.
resultsThe total number of persons in this analysis was 359, from Toronto (n = 201), Ottawa (n = 88), and Hamilton (n = 70). More than half of the diagnoses were among those who immigrated to Canada, and many were diagnosed (11%) during the year they arrived. Many participants experienced a late diagnosis (43.2%), and while 116 (32.3%) had HIV testing history in Ontario, 155 did not (43.2%). Many participants were men who have sex with men (MSM) and had a previously recorded diagnosis of gonorrhea or chlamydia (n = 27; 7.5%) or syphilis (n = 39; 10.9%). Among women and heterosexual men, a diagnosis of hepatitis C (n = 18; 5.0%) appeared to signal a risk of HIV diagnosis.
conclusionThese data show that HIV testing and prevention strategies should be targeted to (1) MSM with a history of syphilis, gonorrhea, or chlamydia; (2) heterosexual men and women with a history of hepatitis C; and (3) immigrants within the first 5 years of migration. To address the evolving epidemic, it will be necessary to employ targeted HIV screening and prevention measures.
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