2010;153:778--89.Schackman BR, Gebo KA, Walensky RP, et al. The lifetime cost of current human immunodeficiency virus care in the United States. Med Care 2006;44:990--7.* Diagnosed HIV prevalence rates were not adjusted for reporting delays to allow inclusion of all 50 states and the District of Columbia. By June 2010, only 40 states had implemented confidential name-based HIV infection reporting for long enough (since at least January 2006) to allow for stabilization of data collection and adjustment for reporting delays. The Behavioral Risk Factor Surveillance System is a state-based, random-digit-dialed telephone survey of the civilian, noninstitutionalized adult population that collects information on preventive health practices and risk behaviors in the United States (5). MMP collects behavioral and clinical information from a nationally representative sample of adults receiving medical care for HIV infection in outpatient facilities in the United States and Puerto Rico (6). A total of 23 project areas were funded to conduct data collection activities for the 2009--2010 MMP data collection cycle: California; Chicago, Illinois; Delaware; Florida; Georgia; Houston, Texas; Illinois; Indiana; Los Angeles County, California; Michigan; Mississippi; New Jersey; the state of New York; New York City, New York; North Carolina; Oregon; Pennsylvania; Philadelphia, Pennsylvania; Puerto Rico; San Francisco, California; Texas; Virginia; and Washington. Patients who received medical care during January--April 2009 at an MMP participating facility were interviewed once during June 2009--April 2010 regarding all medical visits during the 12 months preceding the interview. In addition, patients' medical records were abstracted for documentation of medical care (including prescription of ART and HIV viral load) for the 12 months preceding the interview. All percentages were weighted for the probability of selection and adjusted for nonresponse bias. Based on self-reported information from the patient interview about discussions with a physician, nurse, or other health-care worker. Topics might have included condom negotiation, how to practice safer sexual behavior or injection use, or how to talk with partners about safe sex. Discussion occurring during sessions that were part of HIV testing and counseling encounters were not included.Key PointsAbout 1.2 million persons in the United States are infected with HIV; 80% are aware of their infection, and 20% have not been diagnosed.After diagnosis, 77% of HIV-infected adults are linked to HIV medical care, but only 51% of diagnosed persons stay in medical care; fewer than half of the patients getting care receive prevention counseling from their health-care provider.A suppressed HIV viral load can lead to better health outcomes and a much lower chance of passing HIV on to partners; however, only 28% of all persons with HIV have a suppressed viral load because the best possible levels have not been reached for 1) testing, 2) ongoing HIV medical care, and 3) adherence to medicine.Additional information is available at http://www.cdc.gov/vitalsigns.FIGURE 1. Rates of persons aged 18--64 years living with a diagnosis of HIV infection* --- National HIV Surveillance System, United States, year-end 2008Abbreviation: HIV = human immunodeficiency virus.* Rates are per 100,000 population and are not adjusted for reporting delays. Rates are categorized into quintiles. Overall rate: 417.5 per 100,000 population.Alternate Text: The figure above shows