[header] How to prevent strep throat [title] Avoid contact. [step] The main way to prevent strep throat is to avoid contact with someone you know is infected with strep throat. You should avoid any contact with that person, which means you should not touch them at all or share a close environment with them. 
You should also avoid touching anything that an infected person may have come into contact with. The objects could have the bacteria living on them and you might transmit it to yourself.