Which one of the following groups includes sexually transmitted diseases?
Gonorrhoea, Hepatitis B, Chlamydiasis
Diseases or infections which are transmitted through sexual intercourse with infected persons are called sexually transmitted diseases or STDs.
Gonorrhoea is caused by Neisseria gonorrhoeae (bacteria), Hepatitis B is caused by Hepatitis B virus and Chlamydiasis is caused by Chlamydia trachomatis.