The first participant in a Seattle coronavirus vaccine trial has been given a dose. Proving that the vaccine is effective will take months, experts say. https://t.co/uU7TulVRiP— CNN (@CNN) March 16, 2020
The first participant in a Seattle coronavirus vaccine trial has been given a dose. Proving that the vaccine is effective will take months, experts say. https://t.co/uU7TulVRiP