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Scientists studying COVID-19 variants to determine effect on vaccines – ABC News

Around the globe, scientists are studying new and more contagious COVID-19 variants, and their potential impact on vaccines.
“It’s not a surprise that we’re seeing variants — viruses do change over time,” said Dan Barouch, director of the Center for Virology and Vaccine Research at Beth Israel Medical Center in Boston.
Scientists call them “variants of concern,” and say there are three noteworthy ones. As of Thursday, the Centers for Disease Control and Prevention confirmed that all three variants…
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