If herd immunity works explain the people who take the flu vaccine and still get the flu, explain the people who, magically did not get the plague when everyone else did.
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If herd immunity works explain the people who take the flu vaccine and still get the flu, explain the people who, magically did not get the plague when everyone else did.
Dude, have u heard of Google? Wikipedia? Do some research, fool. https://en.wikipedia.org/wiki/Herd_immunity