Herd immunity differs from place to place, and many factors influence how it’s calculated.

Kevin Hartnett
9d ago

Calculating herd immunity for COVID-19 is complicated, especially when immunity is conveyed by natural infection (not vaccines). I explain why in a new story for @QuantaMagazine

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Great article on herd immunity levels for #covid19 drawing on lots of experts.
Similar to R0, herd immunity is complex and many factors have to be considered when estimating it (not all of which we have good information on).

The Tricky Math of COVID-19 Herd Immunity - a deeper lot at some subtle issues usually glossed over by the press. Great reporting by @KSHartnett for @QuantaMagazine, w @mlipsitch, @nataliexdean,@joel_c_miller et al.

“Heterogeneity of susceptibility” describes the variations that make a person more or less likely to become infected by a disease, like how much a person adheres to social distancing.

On paper, the math of herd immunity is straightforward enough, but the variables presented by an ongoing pandemic make the equation far more complicated. quantamagazine.org/the-tricky-mat… pic.twitter.com/nN7TEneAoL

Insightful article. The Tricky Math of Herd Immunity for COVID-19
#COVID19
@KSHartnett @nataliexdean @joel_c_miller @ecoevo_kel @mlipsitch @mgmgomes1

What percentage of a population must be immune to reach #COVID19 herd immunity?
Based on a common estimate that each infected person will infect 2.5 people: 60%.

The Tricky Math of Herd Immunity for COVID-19 quantamagazine.org/the-tricky-mat… a través de @QuantaMagazine

The Tricky Math of Herd Immunity for COVID-19: Herd immunity differs from place to place, and many factors influence how it’s calculated.
quantamagazine.org/the-tricky-mat… via @KSHartnett