The U.S. Food and Drug Administration is considering ordering a recipe change for the vaccines made by both Pfizer and rival Moderna in hopes that modified boosters could better protect against another surge.
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 updated booster shots this fall.
Now with omicron's even more transmissible relatives spreading widely, the Food and Drug Administration is considering ordering a recipe change for the vaccines made by both Pfizer and rival Moderna in hopes that modified boosters could better protect against another COVID-19 surge expected this fall and winter.
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.
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Pfizer says tweaked Covid-19 shots boost omicron protectionThe announcement comes days before an FDA advisory committee meeting to discuss whether to offer updated boosters to Americans this fall.
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Pfizer says tweaked COVID-19 shots boost omicron protectionPfizer says either an omicron-targeted booster or a combination shot that mixes the original vaccine with omicron protection substantially increases protection.
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Pfizer Says Tweaked COVID-19 Shots Boost Omicron ProtectionPfizer says tweaking its COVID-19 vaccine to better target the omicron variant is safe and boosts protection.
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Pfizer says Omicron-specific COVID vaccine generates a stronger responseThe news comes in advance of a meeting of a key FDA advisory committee to examine how the composition of COVID-19 vaccines should be modified as the virus continues evolving and vaccine protection wanes.
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Pfizer Says Tweaked COVID-19 Shots Boost Omicron ProtectionPfizer says tweaking its COVID-19 vaccine to better target the omicron variant is safe and boosts protection.
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