4 ms·
Vaccines build herd-immunity which is very important.
by geekam 12y ago
Vaccines build herd-immunity which is very important.
- nothrabannosir 12y agoThis is absolutely the argument for the flu vaccine. I like the thought of "beating" flu with oranges and sleep, but herd immunity saves lives. http://www.vaccines.gov/basics/protection/ http://www.vaccines.gov/basics/protection/