Scientists don’t know how long immunity lasts, but they said that relapsing cases were...
immunity
ABC News and the Mayo Clinic jointly found that many of the tests flooding...
In the race to be the first, Russia says it’s close to finding an...
Dr. Todd Ellerin, director of infectious diseases at South Shore Health, explains how the...
With vaccine rollout slowly speeding up, the sports stadium and theme park are among...
Alaska Gov. Mike Dunleavy discusses the state’s vaccine rollout and the decision to become...
