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Everything You Need to Know About Herd Immunity

It’s the ultimate goal, but attaining it can be difficult (and deadly)

Health care professionals test for Covid-19 at the ProHEALTH testing site in Jericho, New York on March 24, 2020. Photo: Newsday LLC/Getty Images

By now you’ve heard lots of talk about herd immunity to Covid-19 — perhaps the hope that it will be key to getting life back to some semblance of normalcy. Or, maybe you’ve heard striving for herd immunity “would be a disaster” that causes millions of deaths. So…

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Tara Haelle

Tara Haelle

Tara Haelle is a science journalist, public speaker, and author of Vaccination Investigation and The Informed Parent. Follow her at @tarahaelle.