People will likely need a third dose of a Covid-19 vaccine within a year of getting fully vaccinated and may subsequently need annual shots to protect against the coronavirus, Pfizer's CEO Albert Bourla said Thursday.
Pfizer and its German partner BioNTech are in the process of studying how long the protective immunity induced by the vaccines will last. Their findings will guide whether additional booster shots will be necessary.
Bourla said it's "likely" that a booster will be needed within 12 months of the initial two-shot regimen.
"It is extremely important to suppress the pool of people that can be susceptible to the virus," Bourla told CNBC Thursday during an event with CVS Health.