If he plays they better quarantine his ass. Put him in his own tent. Give him some cocoa and blankies and call him when you need him or just let the kid rest. It's the flu, not a cold.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .