[Treponemal serology in a Bi-Aka pygmy population of Central Africa].

A serologic survey on 196 blood samples (20% of the present population) in a Bi-Aka pygmean population in Central African Republic. The survey demonstrated the frequency of the unquestionably positive sera: 79.4% of the studied sera. The existence of 78.5% positive sera in children and the observation of yaws lesions suggest a massive and very probably endemic infestation with Treponema pertenue.