covid-19August 6, 2020 These 3 Covid-19 vaccines have been in the news. Here’s what you need to know about them The US government is pouring billions into Covid-19 vaccines, and candidates from three companies are moving along quickly: Moderna, Pfizer and Novavax. 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…