varients
COVID-19 Researchers Say U.S. Must Stay Prepared for Variants
2021-05-13 13:25:35
by
Tom Ramstack
WASHINGTON -- Infectious disease experts urged Congress Wednesday to move quickly to vaccinate Americans before the COVID-19 virus mutates to become more dangerous. Without fast action to create herd immunity, emerging virus strains could make current vaccines less effective, experts... Read More
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