Neatorama Posts Tagged "herd immunity"
Why Vaccines Work...

[http://youtu.be/3aNhzLUL2ys] (YouTube link)What do scurvy and measles have in common? They are diseases we can defeat, as long as we take the proper steps to prevent them. This video from It’s OK To Be Smart goes...

https://www.neatorama.com/2015/02/18/Why-Vaccines-Work/
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