What's Herd Immunity, And Why Does It Matter?
5 years ago
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So far in 2019, 10 states have reported 127 measles cases to the CDC. Measles can get more dangerous as it spreads, because it reduces herd immunity.
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3 years agoU.S. will not reach herd immunity
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Generation 23:00
3 years ago $0.02 earnedWhy does Bible prophecy matter?
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KGUN
3 years agoHerd Immunity: When will Arizona reach it?
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3 years agoWhat does it take to get to herd immunity in Michigan?
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