All three U.S.-authorized COVID-19 vaccines appear to be significantly less protective against the Omicron variant in laboratory testing, but a booster dose likely restores most of the protection, according to a study.
A woman holds a small bottle labeled with a “Coronavirus COVID-19 Vaccine” sticker and a medical syringe in front of the displayed Pfizer logo in this illustration taken, October 30, 2020. REUTERS FILE PHOTOAll three U.S.-authorized COVID-19 vaccines appear to be significantly less protective against the newly-detected Omicron variant of the coronavirus in laboratory testing, but a booster dose likely restores most of the protection, according to a study released on Tuesday.
The study from researchers at Massachusetts General Hospital , Harvard and MIT that has not yet been peer reviewed tested blood from people who received the Moderna, Johnson & Johnson and Pfizer/BioNTech vaccines against a pseudovirus engineered to resemble the Omicron variant.
But the blood from recent recipients of an additional booster dose exhibited potent neutralization of the variant, the study found.
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