This photograph of a yaws patient shows confluent papillomata with an ulceration of the lower leg of several years duration.
The infectious agent is a spirochete and the disease is transmitted by direct contact. Worldwide prevalence was dramatically decreased by mass penicillin treatment campaigns promoted by WHO in the 1950s and 1960s.
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No guarantee is offered as to the accuracy of the images or descriptions contained here. Use this website at your own risk.
Some of the images on this website are in the public domain.