Which among the following disease is not caused by a virus?
All these are sexually transmitted disease (STDs). AIDS, hepatitis B and genital herpes are caused by virus. But not all STDs are caused by virus. E.g., syphilis and gonorrhea. The causative agent for them is bacteria. Syphilis is caused by Treponema pallidum, while gonorrhea is caused by Neisseria gonorrhea respectively.