By LAURAN NEERGAARD, MICHAEL HILL and JOCELYN NOVECK Associated Press The biggest test yet of an experimental COVID-19 vaccine got underway Monday with the first of some 30,000 Americans rolling up their sleeves to receive shots created by the U.S. government as part of the all-out global race to stop the outbreak. Final-stage testing of the vaccine, developed by the National Institutes of Health and Moderna Inc., began with volunteers at various U.S. sites given either a real shot or a dummy without being told which.  It will be months before results trickle in, and there is […]

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