coronavirus October 15, 2020 5:45 pm Doctors Push Back Against ‘Herd Immunity' as COVID-19 Cases Spike As COVID-19 cases increase in 36 states, medical experts are pushing back against the White House’s embrace of a “herd immunity” strategy. US & World Videos 1:31 CDC recommends updated Covid shot for everyone ages 6 months and up 2:39 New COVID variant known as Eris causing rise in cases, experts say 2:05 Federal Covid-19 Public Health Emergency Ends After More Than 3 Years 2:05 After More Than 3 Years, COVID-19 Public Health Emergency Coming to an End 0:35 WHO: COVID Is No Longer a Global Health Emergency