They are sexually transmitted, very common and hard to avoid.

Told them the virus transmitted sexually, so they'd think they had control.

Almost three out of five people - 57% - did not know that hepatitis A can be sexually transmitted.

The virus has about 100 strains, including 30 that are sexually transmitted.

They are nearly always transmitted sexually and, when found, both partners should be treated simultaneously.

Two out of five - 44% - did not know that hepatitis B can be sexually transmitted.

The viruses are sexually transmitted, extremely common and almost impossible to avoid.

While many viruses can be transmitted sexually, there are five conditions whose spread is commonly by sexual contact.

Leprosy is not known to be either sexually transmitted or highly infectious after treatment.

That virus, which is sexually transmitted, causes most cases of cervical cancer.