The Necessity Of A COVID-19 Booster Shot Still Unknown
While COVID-19 vaccines are proven to be effective, it is still unclear if a booster shot will be needed after the initial doses.
Dr. Shad Marvasti with the University of Arizona College of Medicine Phoenix says it depends on immunity response.
“We don’t know ultimately how long the immunity will last from the vaccine. We know that it’s going to be at least three months, if not, maybe six months, potentially up to a year," Marvasti said.
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Other factors being taken into account are the effects of COVID-19 variants.
Marvasti says Pfizer is already studying whether clinical trial participants may need booster shots since it's been months since they received vaccinations.