1 / 22

HIV infection among persons in Ontario infected through heterosexual contact

HIV infection among persons in Ontario infected through heterosexual contact. Robert S. Remis, Maraki Fikre Merid Ontario HIV Epidemiologic Monitoring Unit Department of Public Health Sciences University of Toronto Heterosexual HIV Transmission Meeting November 17, 2004.

merlin
Download Presentation

HIV infection among persons in Ontario infected through heterosexual contact

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. HIV infection among persons in Ontario infected through heterosexual contact Robert S. Remis, Maraki Fikre Merid Ontario HIV Epidemiologic Monitoring Unit Department of Public Health Sciences University of Toronto Heterosexual HIV Transmission Meeting November 17, 2004

  2. Methods: Data sources • AIDS cases in Ontario diagnosed 1981-2003 and reported to April 2004 obtained from Public Health Branch, MOHLTC • HIV diagnoses obtained from the HIV Laboratory diagnosed1985-2003

  3. Methods: Data analysis • AIDS: Number and proportion of reported AIDS cases heterosexually acquired by health region and year of diagnosis, 1981-2003 • HIV diagnoses: Number and proportion of HIV diagnoses (adjusted) heterosexually acquired by health region and year of diagnosis, 1985-2003

  4. Methods: Data analysis • HIV model: incidence and prevalence of • HIV infection • First-time HIV diagnoses • AIDS • HIV-related mortality

  5. HIV diagnoses (adjusted) by exposure category and gender, Ontario 1985-2003

  6. HIV diagnoses (adjusted) among heterosexuals by health region, Ontario, 1985-2003

  7. Proportion HR and LR heterosexual among HIV diagnoses, 1985-2003

  8. Proportion heterosexual among HIV diagnoses by sex, 1985-2003

  9. Reported AIDS cases by exposure category and sex,1981-2003 * Proportion EC known = 96.4%

  10. Reported AIDS cases among heterosexual cases by health region, Ontario, 1981-2003

  11. Proportion annual reported AIDS cases among heterosexual cases by sex,1981-2003

  12. Modeled HIV prevalence by exposure category, in Ontario, December 2003

  13. Modeled HIV prevalence among heterosexual cases by sex,1977-2003

  14. Modeled HIV prevalence by exposure category, in Ontario,December 2003

  15. Conclusions • Females important: Proportion heterosexual 36% for HIV and 39% for AIDS cases among females (compared to 5% and 6% for males) • Observed increase over time for both first-time HIV diagnoses (mostly LR) and AIDS cases among persons infected heterosexually • Cases mostly in Toronto and Ottawa

  16. Conclusions • Estimated number of HIV infected persons infected heterosexually • 3,311 or 14% of Ontario (n=23,552) • 1,535 among males (or 8% of total) • 1,743 among females (or 51%) • Overall, persons infected heterosexually increased 1.64 over five years (1998 to 2003), annual increase of 10.4%

  17. Next steps • Study under way to understand increase and patterns of HIV infection among cases in Ontario heterosexually acquired

  18. Objectives • Validate heterosexual cases and NIR • Determine context and factors involved in heterosexual HIV acquisition and likely source of HIV infection (risk factors of sexual partner if any)

  19. Study design • PHU selection: Toronto and Ottawa based on reported number of HIV heterosexual cases • All HIV cases reported from July 1 ,2004 to June 30, 2005 and • random selection of NIR cases (1:2 for Ottawa and 1:10 for Toronto)

  20. Study design • Subject recruitment • Cases referred by PHU nurse or through physician contact and meeting criteria for inclusion • Data collection • Face-to-face interviews using standardized questionnaire • Data sent to OHEMU for analysis

  21. Timeline of study • Ethics approval • Obtained from Toronto PHU • Awaiting U of T and Ottawa PHU • Retrospective data extraction for cases from July 1, 2004 to study commencement

  22. Acknowledgements • Ontario Ministry of Health and Long-Term Care • Frank McGee, coordinator, AIDS Bureau • Lorraine Schiedel, Public Health Division • HIV Laboratory, Central Public Health Laboratory • Carol Swantee, diagnostic data • Keyi Wu, programming

More Related