“…Bismuth salts, though cheaper, are by no means free from toxicity and a certain proportion of cases failed to show any benefit from their use. Penicillin given by injection has now begun to be of value in rapidly clearing up the lesions of primary and secondary yaws although it has little effect on the serological reactions (Findlay et al , 1944, Hill et al , 1946). Recently aurcomycin by mouth has been shown to be as effective as penicillin: its use avoids the necessity of giving injections (Ampofo and Findlay, 1950).…”