San Francisco Department of Public Health, San Francisco, CA, USA.
School of Public Health, Oregon Health & Sciences University-Portland State University, Portland, OR, USA.
AIDS Behav. 2019 Jul;23(7):1841-1845. doi: 10.1007/s10461-018-2299-7.
Using data from the National HIV Behavioral Surveillance of men who have sex with men (MSM), we estimated the prevalence of sexual behaviors among HIV-negative San Francisco MSM between 2004 and 2017. We estimate a recent increase in the 1-year prevalence of pre-exposure prophylaxis (PrEP) use, from 9.8% in 2014 to 44.9% in 2017. Over that same period, we estimate a decrease in the prevalence of consistent condom use, from 18.5 to 9.4%, and an increase in the percent of individuals with multiple condomless anal intercourse partners. We conclude that while risks for HIV infection may be decreasing among San Francisco MSM due, in part, to increases in PrEP use, the population faces increased risks for other sexually transmitted infections (STIs). Because PrEP alone does not protect against other STIs, we strongly recommend that PrEP users use condoms when possible, routinely screen for STIs, and disclose infections with sexual partners.
利用来自国家男男性行为者 HIV 行为监测的数据，我们估计了 2004 年至 2017 年间 HIV 阴性旧金山男男性行为者的性行为流行率。我们估计，最近预防用药（PrEP）的一年使用率有所增加，从 2014 年的 9.8%增加到 2017 年的 44.9%。在同一时期，我们估计坚持使用安全套的比例从 18.5%下降到 9.4%，同时拥有多个无保护肛交性伴侣的个体比例增加。我们的结论是，虽然旧金山男男性行为者感染 HIV 的风险可能由于 PrEP 使用的增加而有所降低，但该人群面临着其他性传播感染（STI）风险的增加。因为 PrEP 并不能预防其他 STI，我们强烈建议 PrEP 用户在可能的情况下使用安全套，定期筛查 STI，并向性伴侣披露感染情况。
