covid-19November 17, 2020 Two vaccines, one piece of breakthrough tech: How mRNA fights the coronavirus If the experimental coronavirus vaccines win approval from the Food and Drug Administration, they will be the first-ever authorized vaccines that use mRNA. Related posts U.K.'s Johnson launches mass testing…Do you need a Covid-19…What's behind workers' hesitation to…Fully vaccinated people can travel…Younger Latino men are Covid's…Salmonella infections in eight states…Salmonella infections in eight states…The U.S. isn't losing to…Virus-killing robot tested for use…In Covid fight, Cuba touts…