Summary: The question of when a COVID-19 vaccine might be available is perhaps the most pressing in the world. There have been a number of recent headlines on this front, including early but encouraging results from trials. And on Wednesday, the Trump administration awarded a contract to Pfizer and a German biotech firm to potentially deliver doses this year. Miles O'Brien joins Judy Woodruff to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
