The updated mRNA-1273.815 COVID-19 vaccine was significantly protective against hospitalization and medically attended outcomes among adults in the United States.
The COVID-19 pandemic began five years ago in U.S., arriving in a country that already had a partisan divide that would ...
Five years ago, on March 11, 2020, the World Health Organization declared COVID-19 a pandemic. Whether it still is depends on who you ask. There are no clear criteria to mark the end of a pandemic ...
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