Syphilis is a sexually transmitted infection. Without treatment, the stages of syphilis include symptoms that worsen over time. They can lead to severe or possibly fatal complications. Syphilis is a ...

Syphilis is rising across the U.S. in all demographics, but it's hitting some groups and locations particularly hard. Syphilis, a sexually transmitted infection once under control from spreading in ...

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, ...