What causes STDs in men?
STDs can be caused by different kinds of micro-organisms, such as viruses, bacteria and parasites.
Sexually transmitted viral infectios include human papillomavirus (HPV) human immunodeficiency virus (HIV), herpes simplex virus (HSV), hepatitus B and C, and human herpesvirus-8 (HHV-8.
Sexually transmitted bacterial infections include syphilis, gonorrhea and chlamydia.
Trichomonas is an example of a sexually transmitted infection caused by a parasite. Infestations with parasitic bugs, such as lice or scabies, can also be transmitted through close contact and may be acquired during sexual activity.
Humans contact the Zika virus through the bite of an infected mosquito, the Zika virus can be transmitted to others through sexual contact.