California: HIV Continues Retreat in San Francisco
March 29, 2011
Between 2001 and 2011, new HIV infections declined steadily in San Francisco, from an estimated more than 1,000 annually to 736, according to the latest HIV Consensus Estimates. The current "plausibility bounds" range is 534-977 new infections annually, due to statistical uncertainty, according to researchers at the city Department of Public Health (DPH) Epidemiology Section.
This year in San Francisco, an estimated 585 men who have sex with men, most in their 30s, will become HIV-positive. An additional 49 injection drug-using MSM will contract HIV this year. The HIV incidence rate among non-IDU MSM is 1.27 percent, based on a population of 59,809. Prevalence among non-IDU MSM is an estimated 22.7 percent.
Health authorities suggest some HIV-positive men are serosorting, or seeking HIV-positive sexual partners. DPH policy also encourages treating HIV early, which can reduce viral loads and HIV transmission. Researchers are studying the early-treatment policy to verify a link. "We are seeing a lot of benefits from that," said H. Fisher Raymond, DPH's director of bio-behavioral surveillance in the HIV Epidemiology Section.
Reverse migration may be another factor in play, as older HIV patients retire to other locales. "I do think there is an exodus of older people," Raymond said. "That is why Sonoma is asking why their HIV prevalence among MSM is rising."
Bay Area Reporter (San Francisco)
03.24.2011; Matthew S. Bajko
This article was provided by CDC National Prevention Information Network. It is a part of the publication CDC HIV/Hepatitis/STD/TB Prevention News Update.
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