Question

Which precaution do people who participate in high-risk behaviors for STIs need to take?

Answer 1

-through sexual contact
-by the blood of an infected person

Best way to avoid STIs:
sexual abstinence
-avoid drug abuse and other behaviors that may lead to exposure to infected blood or body fluids

Hope this helps :D

Answer 2

Use condoms, or just abstain from sex! And avoid any contact with another person's blood and bodily fluids.