The official HIV prevalence in Mozambique in 2011 was 11.5% of the population aged between 15 and 49 years. In the southern parts of Mozambique—Maputo and Gaza provinces as well as the city of Maputo—the official figures are more than twice as high as the national average. In 2011 the health authorities estimated about 1.7 million Mozambicans were HIV-positive, of whom 600,000 were in need of anti-retroviral treatment. As of December 2011, 240,000 were receiving such treatment, increasing to 416,000 in March 2014 according to the health authorities. According to the 2011 UNAIDS Report, the HIV/AIDS epidemic in Mozambique seems to be levelling off.