Pfizer has asked U.S. regulators to authorize its combination COVID-19 vaccine that adds protection against the newest omicron relatives.
to target BA.4 and BA.5 that are better than ever at dodging immunity from earlier vaccination or infection.Pfizer and its partner BioNTech aim to offer updated boosters to people 12 and older, and shots could begin within weeks if the FDA quickly clears the modified vaccine — a step not expected to require waiting on new studies.
“It’s going to be really important that people this fall and winter get the new shots. It’s designed for the virus that’s out there,” White House COVID-19 coordinator Dr. Ashish Jha said last week. How would combo shots work? Sort of like a second-generation vaccine. Both the Pfizer and Moderna vaccines contain the genetic instructions for the spike protein that coats the coronavirus, to train the immune system to recognize the real virus. The new combo doses will contain instructions for both the original spike target and the spike mutations carried by BA.4 and BA.5.
In the U.S., the FDA will be relying heavily on scientific testing of prior tweaks to the vaccine recipe — rather than a study of the newest boosters that could take months — to decide whether to fast-track updated shots for fall.Pfizer previously announced results from a study that found its earlier omicron tweak significantly revved up antibodies capable of fighting the first omicron version, called BA.1, and to a lesser degree the genetically distinct BA.4 and BA.5 omicron relatives.
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Pfizer seeks OK of updated COVID vaccine booster for fallPfizer has asked U.S. regulators to authorize its combination COVID-19 vaccine that adds protection against the newest omicron relatives
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Pfizer seeks OK of updated COVID vaccine booster for fallPfizer has asked U.S. regulators to authorize its combination COVID-19 vaccine that adds protection against the newest omicron relatives.
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Pfizer seeks OK of updated COVID vaccine booster for fallPfizer has asked U.S. regulators to authorize its combination COVID-19 vaccine that adds protection against the newest omicron relatives.
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