What if Covid-19 Returns Every Year, Like the Common Cold?

The novel coronavirus SARS-CoV-2 is often compared to its close genetic cousin SARS-CoV-1. And for good reason: The virus responsible for the early 2000s SARS outbreak is, in many ways, the closest parallel to what we’re dealing with now. Researchers look to it when studying how long the new virus survives on surfaces and whether it makes sense for us to wear masks. It provides a guide for how the curve of cases and deaths might bend if we all do our part and stay home. The comparison offers some…

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