Frambesia tropica
Widespread campaigns in the 1950s and 1960s to wipe out yaws through penicillin treatment have dramatically decreased the number of cases worldwide.
Hook III EW. Nonsyphilitic Treponematoses. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 341.