The Merck Manual: Spirochetes The Merck Manual: Spirochetes: Brief factsheets on spirochetal diseases. (Spirochetal) http://www.merck.com/mrkshared/mmanual/section13/chapter157/157f.jsp
eMedicine - Yaws : Article by Natalie C Klein, MD, PhD eMedicine - Yaws : Article by Natalie C Klein, MD, PhD: Yaws is a contagious, nonvenereal, treponemal infection in humans that presents mainly in children younger than 15 years. (Spirochetal) http://www.emedicine.com/med/topic2431.htm