If “syphilis” sounds to you like an illness people got in another century, you’re not alone. For decades, the infection was widely considered a disease of the past. But after years of decline, ...

Dear Dr. Roach: I read that in the 1700s, animal blood was transfused into humans to cure syphilis. Is this true? — T.U. Dear T.U.: The story is a bit more complicated. Transfusion from animals into ...

A single dose of penicillin works just as well to cure early syphilis as the three-injection regimen now used by many doctors, a new clinical trial says. Second and third doses of benzathine ...