The number of adults and children living with HIV/AIDS in Benin in 2003 was estimated by the Joint United Nations Programme for HIV/AIDS (UNAIDS) to range between 38,000 and 120,000, with nearly equal numbers of males and females. A recent study conducted by the National AIDS Control Program estimated the number of people living with HIV/AIDS to be 71,950. In 2003, an estimated 6,140 adults and children died of AIDS. Benin has a well-functioning system of antenatal HIV surveillance; in 2002, the median HIV prevalence at 36 antenatal clinics was 1.9%. Another study in 2002 showed an overall prevalence of 2.3% among adults in Cotonou, Benin's largest city.