Second Generation HIV Surveillance in Antenatal Clinic Attendees and Youth in Tonga 2008

Tonga is a small island nation comprising 169 islands with four main island groups with a population of 101, 991 people. Two-thirds of the population resides on the main island of Tongatapu with 23% residing in urban areas. HIV prevalence in Tonga is very low with no HIV cases detected in antenatal women in the previous Second Generation Surveillance (SGS) survey conducted in 2004. In 2008, Tonga conducted a second round SGS in antenatal women and youth population groups.