NPR

This Coronavirus Doesn't Change Quickly, And That's Good News For Vaccine Makers

A coronavirus vaccine could become ineffective if the virus were to undergo certain genetic changes. But so far, so good: Scientists see no evidence that's happening.
Internationally, scientists now<strong data-stringify-type="bold"> </strong>have on file the genomes of more than 47,000 different samples of the virus that causes COVID-19 — up from just one in January. Here's a transmission electron micrograph of SARS-CoV-2 virus particles (orange) isolated from a patient.

Scientists are monitoring the virus that causes COVID-19 for genetic changes that could make a vaccine ineffective. But so far, they're not seeing any.

"There's nothing alarming about the way the coronavirus is mutating or the speed at which it's mutating," says Emma Hodcroft, a molecular epidemiologist at the University of Basel in Switzerland. "We don't think this will be a problem [for vaccines] in the short term."

"To date, there have been very, a senior scientist at Johns Hopkins Applied Physics Laboratory. "And any mutations that we do see are likely not having an effect on the function of the virus itself."

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