STDs And STIs Are Not One In The Same: Here’s The Major Difference
- By
Julia Austin
What Causes STIs?
Source: Peter Dazeley / Getty
STIs are usually transmitted through sexual contact, including the exchange of bodily fluids or skin contact via the penis, vagina, anus or mouth. Most STIs are either caused by bacteria, a virus or a parasite.
HIV and HPV are caused by a virus. Chlamydia and syphilis are caused by bacteria. Trichomonaisis is caused by a parasite known as Trichomonas vaginalis.
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