Pfizer's CEO: A third Covid vaccine dose may be neededEuropost
Pfizer’s CEO Albert Bourla said on Thursday the pharmaceutical company's Covid-19 vaccine recipients would "likely" need a third dose between six to 12 months after full vaccination, followed by an annual shot, news wires reported. Bourla told US TV network CNBC that boosters were expected to become a regular part of life for years to come, as variants continue to spread.
Initial data has shown that vaccines from Moderna and Pfizer/ BioNTech retain most of their effectiveness for at least six months. But the lasting effect of the vaccine is still being studied.
Even if that protection lasts far longer than six months, experts have said that rapidly spreading variants of the coronavirus and others that may emerge could lead to the need for regular booster shots similar to annual flu shots.
A White House official said the US government was preparing for the possibility that a booster shot would be needed between nine to 12 months after initial vaccination. David Kessler, chief science officer for President Joe Biden's Covid-19 response taskforce, told a congressional committee meeting booster dosages would be administered according to vulnerability to coronavirus.