Vaccines have up to 90% efficacy against severe COVID-19 for up to six months
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3 June 2022Vaccines have up to 90% efficacy against severe COVID-19 for up to six months
Protection against symptomatic COVID-19 begins to decrease after one month from initial vaccination, while immunity against severe COVID-19 remains high for about six months, according to a recent study in BMC Infectious Diseases by Penn State College of Medicine scientists.
