Moderna's vaccine may have a longer shelf life than originally anticipated. It was approved for 30 days at proper temperatures, but may actually last for up to 90 days.
Credit: FOX 4 Now Florida Duration: 00:37Published
Top U.S. health officials urged Americans to get vaccinated against COVID-19 on Wednesday, saying U.S. regulators' pause on Johnson & Johnson shots should boost confidence in the vaccines' safety and..
WBZ TV's Kate Merrill reports.
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