Antibody levels may wane after 7 months for people who got the Pfizer-BioNTech vaccine, according to a new study published on the bioRxiv preprint server.
In about half of the adults, neutralizing antibodies were undetectable at 6 months after the second dose, particularly againstNeutralizing antibodies only make up part of the body’s immune defense against the virus, Reuters noted, but they are still “critically important” in protecting against coronavirus infections.
“These findings suggest that administering a booster dose at around 6 to 7 months following the initial immunization will likely enhance protection,” the study authors wrote. BioNTech said a new vaccine formula will likely be needed by mid-2022 to protect against future mutations of the virus, according“This year, [a different vaccine] is completely unneeded, but by mid-next year, it could be a different situation,” Ugur Sahin, MD, co-founder and CEO of BioNTech, told the news outlet., are more contagious than the original coronavirus strain but not different enough to evade current vaccines, he said. But new strains may be able to evade boosters.
“This virus will stay, and the virus will further adapt,” Sahin said. “This is a continuous evolution, and that evolution has just started.”Reuters: “Delta increases COVID-19 risks for pregnant women; Pfizer/BioNTech vaccine antibodies gone by 7 months for many.”© 2021 WebMD, LLC. All rights reserved.
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Pfizer Tests Pill That Could Prevent Covid InfectionI am a London-based reporter for Forbes covering breaking news. Previously, I have worked as a reporter for a specialist legal publication covering big data and as a freelance journalist and policy analyst covering science, tech and health. I have a master’s degree in Biological Natural Sciences and a master’s degree in the History and Philosophy of Science from the University of Cambridge. Follow me on Twitter theroberthart or email me at rhartforbes.com
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