Yaws, a tropical infection of the skin, bones and joints is usually caused by the bacterium spirochete. Yaws is easily and quickly transmitted by skin contact with infected individuals. The Bacteria enters through an existing cut or similar damage to the skin. Usually less than a month but within ninety days of infection with Yaws a painless but vivid “Parent Yaw”, an ulcerous papule appears on the surface of the skin at the point of entry.
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