One strain is enough to worry about
Despite some news reports, it’s too soon to say whether there is more than one strain of the SARS-CoV-2 coronavirus — let alone one that’s more dangerous or more contagious. The virus does mutate, and tracking how it changes helps to trace its spread — which is beautifully visualized on Nextstrain. But scientists generally consider these variations to be the same strain because there is no strong evidence of significant differences, such as in how easily they spread.
The Atlantic | 9 min read
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