Sexually transmitted infections, or STIs, include both sexually transmitted diseases, known as STDs, and the many infections that don’t progress to disease. STIs are caused by more than 30 different ...

I’ve received questions about STIs this week, so I decided to rerun a column from 2016. Some problems never go away. Q. My ex ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The bacteria that causes chlamydia, a common sexually transmitted ...

Add Yahoo as a preferred source to see more of our stories on Google. Chlamydia is the most common STI caused by bacteria, but because it's typically asymptomatic, many people can have it and not know ...

Chlamydia is often called a “silent infection” because many people don’t know they have it. It’s caused by a type of bacteria called Chlamydia trachomatis and can affect both men and women. While it’s ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Chlamydia and gonorrhea are on the rise in New York City, a new report ...

NEW YORK (Reuters Health) - A large number of people between the ages of 14 and 39 years have chlamydia, a sexually transmitted disease, a new report indicates, while gonorrhea, another STD, is less ...

Credit: Getty Images / Rodolfo Parulan Jr. If you're sexually active, chances are you've probably worried about STIs at some point. Google is often our first port of call when we're in the midst of an ...

Viruses, Infections & Disease 'Brain-eating' amoebas are nearly always fatal. New treatments may change that. Viruses, Infections & Disease Diagnostic dilemma: 83-year-old man's unusual form of ...