A study that followed essential workers in six states found that vaccine protection dropped from 91 percent to 66 percent, still “a really high number,” one scientist said.A study that followed essential workers in six states found that vaccine protection dropped from 91 percent to 66 percent, still “a really high number,” one scientist said.Coronavirus Delta Variant, Vaccination and Immunization, Coronavirus (2019-nCoV), Centers for Disease Control and PreventionRead More
