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CDC Report - HIV Infections by Sex, Race and Age.

Posted Aug 27 2008 12:00am

From the CDC Report
August 2008

Gay and Bisexual Men of All Races Are Most Severely Affected by HIV

Gay and bisexual men—referred to in CDC surveillance systems as men who have sex with men (MSM)1 —accounted for a significantly greater proportion of estimated new infections in 2006 than any other risk group (Figures 2). These findings underscore the need to expand access to HIV testing and other proven interventions, and to continue research to identify new interventions to address the evolving needs of diverse populations of gay and bisexual men in the United States. Many factors probably contribute to high risk of HIV among MSM, including the challenge of maintaining safer-sex behaviors, the assumption that one is HIV-negative, underestimates of personal risk factors, and stigma, which may prevent access to needed services and may lead to substance abuse and depression.

Figure 2. Estimated Number of New HIV Infections, Extended Back-Calculation Model, by Transmission Category, 1977– 2006

This figure, numbered 2, shows the estimated new HIV infections by transmission category from 1977 to 2006, using the extended back-calculation model. The estimates are for 2-year intervals during 1980–1987, 3-year intervals during 1977–1979 and 1988 –2002, and a 4-year interval for 2003–2006.  The transmission categories are male-to-male sexual contact, injection drug use, male-to-male sexual contact and injection drug use, and high-risk heterosexual contact.

Impact of HIV Greater Among Blacks Than Any Other Racial or Ethnic Group

CDC’s new estimates confirm that blacks are more severely and disproportionately affected by HIV than any other racial/ethnic group in the United States (Figure 4). Trend analyses show that HIV incidence among blacks has been roughly stable at an unacceptably high level since the early 1990s (except for a brief fluctuation in the late 1990s). The continued severity of the epidemic among blacks underscores the need to sustain and accelerate prevention efforts in this population. Although race itself is not a risk factor for HIV infection, a range of issues contribute to the disproportionate HIV risk for blacks in the United States, including poverty, stigma, higher rates of other STDs, and drug use.

Figure 4. Estimated Rates of New HIV Infections, by Race/Ethnicity, 2006

This bar chart, named figure 4, shows the estimated rates of new HIV infections in 2006 by Race/Ethnicity. Rates shown on the chart include: 83.7 new infections per 100,000 population among blacks, 29.3 new infections per 100,000 population among Hispanics, and 11.5 new infections per 100,000 population among whites in 2006.  American Indians/Alaska Natives has 14.6 new infections per 100,000 population, and Asians/Pacific Islanders had 10.3 new infections per 100,000 population.

By Age Group

More infections occurred among young people under 30 (aged 13–29) than any other age group (34%, or 19,200), (Figure 8), followed by persons 30–39 (31% or 17,400). These data confirm that HIV is an epidemic primarily of young people and underscores the critical need to reach each new generation of young people with HIV prevention services. Persons over age 50 continue to account for a relatively small proportion of new infections.

Figure 8. Estimated New HIV Infections, by Age, 2006

This pie chart, figure 8, shows the estimated new HIV infections in 2006 by age. In 2006, persons ages 13 to 29 accounted for 34 percent of new HIV infections, persons ages 30 to 39 accounted for 31 percent of new HIV infections, persons ages 40 to 49 accounted for 25 percent of new HIV infections, and those more than 50 years of age accounted for 10 percent of new HIV infections.

Click here for full report.

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