Summary: In our news wrap Monday, final-stage trials got underway in the biggest COVID-19 study so far. The first of 30,000 volunteers received initial dosages of a vaccine candidate developed by the National Institutes of Health and drugmaker Moderna in record time. Also, the Miami Marlins canceled their first home game amid reports that at least 14 players have tested positive for COVID-19. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
