Understanding viral vector COVID-19 vaccines | Moderna COVID-19 vaccine: Fact sheet for recipients and caregivers |
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Centers for Disease Control and Prevention | Centers for Disease Control and Prevention |
FDA takes additional action in fight against COVID-19 by issuing emergency use authorization for second COVID-19 vaccine.
COVID-19 vaccines vs variants — Determining how much immunity is enough | Centers for Disease Control and Prevention |
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Centers for Disease Control and Prevention |
How CDC is making COVID-19 recommendations.