Merck's antiviral pill may help beat COVID-19, but vaccines and testing still needed

PBS NewsHour shows that although COVID-19 vaccines help reduce the spread of COVID-19 and resulting deaths, there have not been many good or easy treatment options for the actual virus. But a new antiviral drug from Merck offers hope for keeping patients infected with COVID-19 out of the hospital and alive. Dr. Nahid Bhadelia, an infectious disease specialist at Boston University, joins William Brangham to discuss.