COVID-19 vaccine November 30, 2021 9:09 am Omicron Variant Shows Need to Get More Americans Vaccinated As long as there are people unprotected from the coronavirus, we are going to see variants like the new Omicron strain of COVID-19, says NBC medical correspondent Dr. John Torres. 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