New virus variants raise alarm
New virus variants raise alarm Filling syringes with vaccines at Fenway Park in Boston (Getty) What happened Even as the U.S. saw a continuing steep drop in Covid-19 cases this week, health officials expressed growing concern about the accelerated spread of new coronavirus variants and their resistance to vaccinesâ protection. Maryland and South Carolina reported five cases of the South Africa variant, or B.1.351, which has overwhelmed South Africa and spread to at least 32 countriesâand appears to be reinfecting people previously sickened with Covid. The B.1.1.7 strain, or U.K. var...
Source: theweek.com