A $258 million HIV/AIDS prevention program in six Indian states may have prevented an estimated 100,000 infections from 2003 to 2008, researchers from the Public Health Foundation of India and the University of Washington suggest in a study published in the Lancet on Tuesday, the Associated Press/Washington Post reports (10/10). The analysis “concluded that infections dropped significantly in three populous southern states, a little in Tamil Nadu, and not at all in northern Manipur and Nagaland,” the New York Times reports (McNeil, 10/10). “While the initial findings regarding the … Avahan project, funded by the Bill & Melinda Gates Foundation, come with large uncertainty due to data limitations and methodology, the study’s authors say … that investing in prevention can make a dent in one of the world’s largest epidemics,” AP writes (10/10). Tactics used in the program, which targeted high-risk groups, “included one-on-one safe-sex counseling, free condoms, exchanging used needles for sterilized ones, clinics to treat sexually-transmitted disease and advocacy work within the community,” Agence France-Press reports (10/10).