Those least likely to know they have HIV and least likely to get prevention counseling are gay and bisexual men, the population most affected by the disease, researchers noted.
To make its estimates, the CDC used data from the National HIV Surveillance System, the Behavioral Risk Factor Surveillance System and the Medical Monitoring Project, as well as other published data.
Dr. Margaret Fischl, director of the AIDS Clinical Research Unit and co-director of the University of Miami Developmental Center for AIDS Research, said that "one has to continue to push to make people realize that you should be testing everyone. Everyone should be tested if they are young and sexually active."
Moreover, more infected people need to get treatment and stay on treatment, she said. "I didn't spend 25 years designing antiretroviral trials to get where we are today to see these types of numbers," she said.
"We know these regimens can have a 96 percent success rate," Fischl said. "These regimens today are very powerful, they're easy to take, they have much less side effects and patients needed to be followed intensely," she added. In addition, treatment can help reduce the transmission of HIV, Fischl said.
More information
For more information on HIV/AIDS, visit the U.S. Centers for Disease Control and Prevention.
SOURCES: Margaret A. Fischl, M.D., professor, medicine, and director, AIDS Clinical Research Unit, co-director, University of Miami Developmental Center for AIDS Research; Nov. 29, 2011, teleconference with: Thomas R. Frieden, M.D., M.P.H., director, U.S. Centers for Disease Control and Prevention; Nov. 29, 2011, Vital Signs: HIV Prevention Through Care and
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