Pfizer says either an omicron-targeted booster or a combination shot that mixes the original vaccine with omicron protection substantially increases protection.
-- Pfizer announced Saturday that tweaking its COVID-19 vaccine to better target the omicron variant is safe and works — just days before regulators debate whether to offer Americans The vaccines currently used in the U.S. still offer strong protection against severe COVID-19 disease and death -- especially if people have gotten a booster dose.
Today is the day that many parents across the country have been waiting for – an opportunity to get their young children the COVID-19 vaccination. In a study of more than 1,200 middle-aged and older adults who’d already had three vaccine doses, Pfizer said both booster approaches spurred a substantial jump in omicron-fighting antibodies.
And importantly, preliminary lab studies show the tweaked shots also produce antibodies capable of fighting omicron’s genetically distinct relatives named BA.4 and BA.5, although those levels weren’t nearly as high. from tests of its combination shot, what scientists call a “bivalent” vaccine.
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