What do coronavirus variants mean for vaccines and reinfection? What we know so far – CNET

The coronavirus SARS-CoV-2 has constantly evolved since it was first detected in humans over a year ago. Viruses replicate exceedingly fast, and each time they do, there’s a small chance they mutate. This is par for the course, if you’re a virus. 
But in the last few weeks, scientists have been investigating SARS-CoV-2 variants with a handful of mutations arising much faster than expected. Normally, we’d expect to see one to two largely inconsequential genetic changes in the coronavirus every few…

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