Analysis: How worried should you be about coronavirus variants? A virologist explains his concerns | PBS NewsHour

Analysis: How worried should you be about coronavirus variants? A virologist explains his concerns | PBS NewsHour India and California have recently detected “double mutant” variants that, although not yet classified, have gained international interest. They have one key mutation in the spike protein similar to one found in the Brazilian and South African variants, and another already found in the B.1.427 and B.1.429 California variants. As of today, no variant has been classified as of high consequence, although the concern is that this could change as new variants emerge and we learn more about the variants already circulating.