Find out more about sexually transmitted infections, which are among the most common of the contagious diseases.
- Chlamydia
Chlamydia is a serious and common sexually transmitted disease, but it often causes no symptoms. - Genital warts
Genital warts are small, soft, lumps in your genital area that are caused by the human papilloma virus (HPV). The virus is passed on through having sex or very intimate contact with someone who already has warts. - Sexually transmitted infections
Sexually transmitted diseases (STDs): who is most at risk?
