MMWR: Vital Signs: HIV Testing and Diagnosis Among Adults --- United States, 2001--2009

This report discusses a study on HIV testing and diagnosis among adults in the United States, 2001-2009. CDC used 2001-2009 data from the National Health Interview Survey to calculate the percentage of persons aged 18-64 years who reported ever being tested for HIV in the United States. Also, data from the National HIV surveillance system were used to estimate numbers, percentages, and rates of HIV diagnoses; AIDS diagnoses; and late diagnoses of HIV infection for persons diagnosed with HIV infection during 2001-2008 and reported to CDC through June 2009. Results show that the number of persons in the United States who report ever being tested for HIV is increasing, and fewer persons are being diagnosed late in their infection, but about one-third of diagnoses still occur late. Implications for public health practice are discussed.