CNN News Alert: Pfizer sees waning immunity from its Covid-19 vaccine, says developing new booster
Drugmaker Pfizer said Thursday it is seeing waning immunity from its coronavirus vaccine and says it is picking up its efforts to develop a booster dose that will protect people from variants. It said it would seek emergency use authorization from the US Food and Drug Administration for a booster dose in August after releasing more data about how well a third dose of vaccine works.
But in an unusual move, two top federal agencies said Americans don't need boosters yet and said it was not up to companies alone to decide when they might be needed. Hours after Pfizer issued its statement, the FDA and Centers for Disease and Control issued a joint statement saying Americans do not need booster shots yet.
Drugmaker Pfizer said Thursday it is seeing waning immunity from its coronavirus vaccine and says it is picking up its efforts to develop a booster dose that will protect people from variants. It said it would seek emergency use authorization from the US Food and Drug Administration for a booster dose in August after releasing more data about how well a third dose of vaccine works.
But in an unusual move, two top federal agencies said Americans don't need boosters yet and said it was not up to companies alone to decide when they might be needed. Hours after Pfizer issued its statement, the FDA and Centers for Disease and Control issued a joint statement saying Americans do not need booster shots yet.
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