Vaccination

COVID-19 vaccine effectiveness changing with Delta predominance

(HealthDay)—With increasing prevalence of the delta variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), there was a decline in vaccine protection against SARS-CoV-2 infection, while protection remained ...

Vaccination

New data shows the power of COVID vaccines

(HealthDay)—The effectiveness of COVID-19 vaccines is borne out in new government data showing that more than 99.99% of fully vaccinated Americans have not had a breakthrough infection resulting in hospitalization or death.

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