Categorization of endemicity of trachoma and yaws at country level, worldwide, 2013.

For the purposes of this figure, a country is categorized as endemic for a disease based on its status in the Global Health Observatory database (http://www.who.int/gho/en/) as at 15 December 2014. A country is “endemic for blinding trachoma” in this database if it contains one or more administrative areas in which the most recent population-based prevalence data held by the Global Atlas of Trachoma (www.trachomaatlas.org) show the prevalence of TF in 1- to 9-year-olds to be ≥10% and/or the prevalence of TT in the whole population to be ≥0.1%. Papua New Guinea is additionally categorized as “endemic for blinding trachoma” on this map on the basis of preliminary survey work carried out by the Ministry of Health.