sexually transmitted diseases

A woman in her 20s infected a man after she returned to New York City from a country where Zika is spreading. Health officials say he got infected through unprotected sexual intercourse.

Syphilis cases are on the rise. The bacterium that causes the sexually transmitted disease is becoming resistant to some antibiotics. But somehow, penicillin has remained the best weapon against it.

A Texas man who had traveled to Venezuela passed the Zika virus to his male partner through sex. CDC officials say that people should be aware that Zika can be transmitted through semen.

"We're talking about gloves, full body cover and goggles," says a porn industry executive of the California proposal to require condom use on the set. Proponents say it's about workplace safety.

Many pregnant women aren't getting adequate health care, so they aren't being tested for syphilis. It can kill or seriously disable babies. The 458 cases last year could have been prevented.

Most school sex education programs stick to the nuts and bolts of biology. Teenagers who also talk about what makes for a good relationship are more likely to avoid pregnancy and STDs, a study finds.