Massive genetic study in Houston shows coronavirus mutating and potentially evolving amid rapid U.S. spread

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That some strains of the Corona virus spread more easily than others. NPR's Rob Stein has the tails. Researchers analyzed more than 5000 genetic sequences of the Corona virus recovered from patients in Houston. They found that samples of the virus containing a mutation in the protein the virus uses to infect cells. Quickly became dominant between the 1st and 2nd waves of infections, The researchers say that suggests mutation made those strains of the virus more contagious. Researcher stress that mutation did not make the virus board dangerous patients who caught it didn't get sicker, but it appears they tend to have higher amounts of the virus in their bodies, which could explain by virus with that mutation spreads or easily. Some scientists, however, are questioning the researchers conclusions. Rob Stein.

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