covid-19July 8, 2020 Face shields are more comfortable than masks. Is it effective in preventing transmission? Health care workers use face shields to protect against coronavirus droplets. How well do they work for average people? 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…