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Pre-exposure prophylaxis (PrEP) is medication that people who are at risk of human immunodeficiency virus (HIV) may take to prevent infection.


STDs can't be transmitted by casual contact, like hugging. Some infections can be considered STDs, but are also transmitted non-sexually.


The CDC recommends that everyone test at least once, and you should test more often if you have multiple sex partners or use needles for drug use.


STDs aren't transmitted through clothing. Fabric is a barrier to germs. STDs need unclothed, genital skin-to-skin contact or penetration to transmit.


Genital herpes can spread through direct, unclothed, skin-to-skin contact, including oral, vaginal and anal sex.


Can I get HIV from surfaces, like toilet seats, doorknobs, shared drinks or pools? How long can HIV live outside the human body, or it's host?


Can you get HIV from casual contact, like hugging, touching, sharing drinks or kissing? How DO you get HIV?


STIs are the most common cause of genital sores, but allergic reactions, autoimmune disorders, fungal infections and many other conditions may, too.


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