The Concept of Classical Herd Immunity May Not Apply to Covid-19

There has been speculation about when in the coronavirus disease 2019 (COVID-19) pandemic we will be able to live with the virus in a manner that does not disrupt most peoples’ lives. Much of this discussion has focused on herd immunity thresholds. As commonly understood, herd immunity thresholds are reached…

Americans keep getting reinfected with COVID-19 as new variants emerge, data shows

This means that getting the pandemic under control is that much harder, even if cases are generally not severe.

Why COVID-19 tests are in short supply and results are delayed

Well, COVID testing across the US has been plagued by long lines and wait times topping three hours in some cities. And that has led to a lot of frustration ahead of the Christmas holiday. The seven day average, by the way, of testing across New York City alone has…

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