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AIDS Behav. 2018 Jul;22(7):2068-2078. doi: 10.1007/s10461-017-1702-0.

Sustained Reduction in Sexual Behavior that May Pose a Risk of HIV Transmission Following Diagnosis During Early HIV Infection Among Gay Men in Vancouver, British Columbia.

Author information

1
BC Centre for Disease Control, 655 West 12th Avenue, Vancouver, BC, V5Z 4R4, Canada. mark.gilbert@bccdc.ca.
2
School of Population and Public Health, University of British Columbia, Vancouver, Canada. mark.gilbert@bccdc.ca.
3
School of Nursing, University of British Columbia Okanagan, Kelowna, Canada.
4
Women's Health Research Institute, Vancouver, Canada.
5
School of Population and Public Health, University of British Columbia, Vancouver, Canada.
6
Dalla Lana School of Public Health, University of Toronto, Toronto, Canada.
7
BC Centre for Disease Control, 655 West 12th Avenue, Vancouver, BC, V5Z 4R4, Canada.
8
Department of Statistics, University of British Columbia, Vancouver, Canada.
9
CATIE, Toronto, Canada.
10
Positive Living Society of British Columbia, Vancouver, Canada.
11
Centre for Addiction and Mental Health, Toronto, Canada.
12
Faculty of Health Sciences, Simon Fraser University, Vancouver, Canada.

Abstract

Increased viral load during early HIV infection (EHI) disproportionately contributes to HIV transmission among gay men. We examined changes in sexual behavior that may pose a risk of HIV transmission (condomless anal sex (AS) with a serodiscordant or unknown status partner, CAS-SDU) in a cohort of 25 gay men newly diagnosed during EHI who provided information on 241 sexual partners at six time points following diagnosis. Twenty-two (88%) participants reported ≥1 AS partner (median time to first AS 80 days) and 12 (55%) reported ≥1 partnership involving CAS-SDU (median 116 days). In hierarchical generalized linear mixed effects models, AS was significantly less likely in all time periods following diagnosis and more likely with serodiscordant partners. The likelihood of CAS-SDU decreased three months after diagnosis and was higher in recently versus acutely infected participants. Most men in our study abstained from sex immediately after diagnosis with sustained longer-term reduction in CAS-SDU, confirming the importance of timely diagnosis during EHI.

KEYWORDS:

Cohort study; Diagnosis; Gay men; HIV; Sexual behavior

PMID:
28168375
DOI:
10.1007/s10461-017-1702-0

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