HIV, Chlamydia, Gonorrhea, and Primary and Secondary Syphilis among American Indians and Alaska Natives Within Indian Health Service Areas in the United States, 2007–2010

National rates from human immunodeficiency virus (HIV) and sexually transmitted disease (STD) surveillance may not effectively convey the impact of HIV and STDs on American Indian/Alaska Native (AI/AN) communities. Instead, we compared average annual diagnosis rates per 100,000 population of HIV, chlamydia (CT), gonorrhea (GC), and primary and secondary (P&S) syphilis, from 2007 to 2010, among AI/AN aged ≥13 years residing in 625 counties in the 12 Indian Health Service Areas, all AI/AN, and all races/ethnicities to address this gap. AI/AN comprised persons reported as AI/AN only, with or without Hispanic ethnicity. Out of 12 IHS Areas, 10 had higher case rates for CT, 3 for GC, and 4 for P&S syphilis compared to rates for all races/ethnicities. Eight Areas had higher HIV diagnosis rates than for all AI/AN, but HIV rates for all IHS Areas were lower than national rates for all races/ethnicities. Two IHS Areas ranking highest in rates of CT and GC and four Areas with highest P&S syphilis also had high HIV rates. STD and HIV rates among AI/AN were greater in certain IHS Areas than expected from observing national rates for AI/AN. Integrated surveillance of overlapping trends in STDs and HIV may be useful in guiding prevention efforts for AI/AN populations.