At least 120,000 Americans are needed to test COVID-19 vaccines. A 'very encouraging' 107,000 are so far signed up.

At least 120,000 volunteers are needed to take part in testing of candidate vaccines to fight COVID-19. So far, 107,000 Americans have signed up.

      

Via USATODAY - News Top Stories https://ift.tt/2UWK6IU