coronavirus April 17, 2020 7:33 pm Dr. Birx Explains the Different Types of Testing Dr. Deborah Birx explains the difference between the two types of testing that will happen with coronavirus as the United States begins a path toward reopening the country. 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