CDC Reports 1 In 5 Urban Gay Men Are Poz

According to a new report from the Centers For Disease Control, 19% of urban gay and bisexual men are HIV positive but one-quarter to one-half of them don't know it.

Researchers at the CDC studied 8,153 men who have sex with men in 21 U.S. cities. The men were taking part in the 2008 National HIV Behavioral Surveillance System, which looked at prevalence and awareness of the human immunodeficiency virus or HIV, the virus that causes AIDS. Overall, they found that 19 percent of gay men are infected with HIV. The study found that 28 percent of gay black men infected with HIV, compared with 18 percent of Hispanic men and 16 percent of white men. Black men in the study were also least likely to be aware of their infection, with 59 percent unaware of their infection compared with 46 percent of Hispanic men and 26 percent of white men. Age also plays a role. Among 18 to 29-year-old men, 63 percent did not know they were infected with HIV, compared with 37 percent of men aged 30 and older, the team reported in the CDC's weekly report on death and disease.

The CDC recommends at least an annual HIV test for all men who have sex with men.