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BY Jaqueline Mason

Last updated Aug. 23, 2021

Soon, additional COVID-19 vaccine doses will be available for everyone in the U.S. to provide added protection against the coronavirus. For now, the focus is on those with weakened immune systems. Research studies show that immunocompromised people who have low or no protection following two doses of mRNA COVID-19 vaccines may have an improved response after an additional dose of the same vaccine....

Illustration of COVID-19 with antibodies