Syphilis Topic Guide

Syphilis Syphilis: Syphilis is a contagious bacterial infection transmitted most often through sexual intercourse. Flulike symptoms, body rash, and swollen lymph nodes. Late-phase syphilis attacks the heart, brain, skin, and bones. Late-stage syphilis is rare since the discovery of the antibiotic penicillin, which is used to treat this sexually transmitted disease (STD).

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