By BY APOORVA MANDAVILLI from NYT Health https://ift.tt/1JDzFxh
A new Covid vaccine shows 100 percent efficacy against severe disease and hospitalizations, its makers say.
By BY APOORVA MANDAVILLI from NYT Health https://ift.tt/1JDzFxh
By BY APOORVA MANDAVILLI from NYT Health https://ift.tt/1JDzFxh
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