covid-19November 24, 2020 When it comes to vaccinating the world, regulatory approval is only the first step “It’s going to be an extraordinary logistic challenge,” one former officials said. “I just hope it works.” 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…