Ask the Expert: New COVID-19 Strains, Herd Immunity and Our Return To “Normal”

New variants of the COVID-19 virus have emerged. Are these new strains more contagious? Are two masks better than one? We asked these questions and more to Dr. Lisa Harris, Vice President of Medical Affairs at Excellus BlueCross BlueShield. There’s a lot we know, but there’s also a lot we don’t know as the COVID-19 situation continues to evolve. Dr. Harris shares the latest.

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