A review of the historic documents from 1950s shows that over 90 countries and territories were endemic for yaws. WHO provided technical assistance to 46 of these countries between 1952–1964.
Since 1990, reporting of yaws to WHO is not mandatory and therefore the data availability may be limited. Only 14 out of the 90 countries and territories have recent data on yaws based on the routine surveillance system; however, these figures may just be an indication of the presence of the disease and not its full extent. Ghana, Papua New Guinea and the Solomon Islands report over 10 000 cases per year. Ecuador and India appear to have interrupted transmission.