Nearly 2000 doses of Moderna’s COVID-19 vaccine were spoiled at a Boston-area VA facility after a cleaning contractor accidentally loosened a plug for a freezer, according to a report. The shots were discovered by staff at the VA Boston Pharmacy on Tuesday. At least 1,900 doses were compromised, Kyle Toto, a spokesman for the VA Boston Healthcare System, told the Boston Globe. “The plug was found loose after a contractor accidentally removed it while cleaning,” Toto said. ... Moderna COVID-19 vaccines — as well as doses developed by rival Pfizer-BioNTech — must be stored at very low temperatures, between negative...