Is it normal for a virus to mutate? Are the new strains of coronavirus more contagious? Will COVID-19 vaccines still work? Johns Hopkins Bloomberg School of Public Health turned to expert immunologist Andy Pekosz weighs in.
Is it normal for a virus to mutate? Are the new strains of coronavirus more contagious? Will COVID-19 vaccines still work? Johns Hopkins Bloomberg School of Public Health turned to expert immunologist Andy Pekosz weighs in.