A rising number of syphilis infections in Arlington is driving a push to do better at testing and treating the sexually ...

A 5,500-year-old skeleton from the Americas has yielded the oldest genetic evidence yet of a bacterium closely related to the ...

Infectious mononucleosis, often called "mono," is a viral illness best known for causing extreme fatigue, sore throat and swollen glands.

The findings represent the oldest complete set of genetic information from this bacterial group and shed light on its evolutionary history ...

New numbers show a 28% jump in cases over two years. We break down what's behind these numbers.

Sjögren’s disease, an autoimmune disease that mainly affects women, can be diagnosed through antibody tests and gland ...

Sexually transmitted diseases (STDs), also called sexually transmitted infections (STIs), are far more common than many people realize. One of the biggest reasons they continue to spread is ...

Strep throat is a common throat infection that often causes a sore throat, fever and trouble swallowing. It tends to come on ...

We don’t stop having sex after 40, but we do tend to stop talking about it. And, as the soaring rates of midlife STIs suggest, we might also stop practising safe sex.

At-home health tests are booming—but are they reliable? Doctors explain which home tests are worth trying, which to skip, and ...

Unverified claims in the newly released Epstein files have sparked online speculation about an STD allegedly linked to Bill ...