![]() Joseph Prejean of CDC's HIV Incidence and Case Surveillance Branch stressed that black men (which it also characterizes as African Americans) do not report higher risk-taking behavior than other MSM. The use of powerful antiretroviral drugs as preventives has so reduced the number of babies becoming infected by their mothers that this route of transmission was included in the "other" category that makes up less than 1% of the total incidence. Next came heterosexual transmission (27%), the main mode of spread in most of the world, and injection drug use (9%). The new CDC data, published today in PLoS ONE, show that MSM of all ethnicities accounted for 61% of the new U.S. "We're very concerned about this trend," said CDC Director Thomas Frieden at a press teleconference this afternoon. But in black gay and bisexual men between ages 13 and 29, the incidence jumped by 48%, to 6500 cases in 2009. The CDC study relied on the most sensitive technique yet used to determine that each year about 50,000 people become infected, which is in keeping with earlier estimates. Centers for Disease Control and Prevention (CDC) shows that new rates of HIV infection between 20 remained stable in the country for all but one group: young, black men who have sex with men (MSM).
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