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A comment on To Protect His Son, a Father Asks School to Bar Unvaccinated Children. Parent comment

Re:To Protect His Son, a Father Asks School to Bar Unvaccina... by toomuchtodo on Tuesday January 27, 2015 @10:40PM (#8957929)
> If vaccination works, why do we care that a small minority aren't vaccinated?

http://en.wikipedia.org/wiki/Herd_immunity

By choosing not to be vaccinated, you put those at risk who cannot receive a vaccination for legitimate reasons.

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