August 22, 2022

How long do COVID-19 shots stay effective?

The COVID-19 virus is very similar to SARS and MERS. So researchers have been looking into how well COVID-19 vaccines work over time. After a second dose, the vaccine is still effective for at least six months, according to a study from Pfizer and Biotech that came out earlier this month.  So even though COVID-19 […]

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