Pfizer study says updated COVID boosters rev up protection.
With many Americans reluctant to roll up their sleeves again, perhaps the better question is how the new booster compares to going without another dose.
A hint: A month after receiving the new booster, antibody levels in people 55 and older had jumped 13 times higher than before the extra dose. Younger adults saw a 9.5-fold jump, Pfizer and its partner BioNTech said. It had been about 11 months since the study participants’ last vaccination. The new variants accounted for nearly 1 in 3 new COVID-19 infections last week, according to the latest CDC estimates.
It’s too soon to know how much real-world protection the antibody boost translates into -- and how long it will last. The results are preliminary, the study is still underway and infection-fighting antibodies naturally wane over time.s without first requiring testing in people, basing the decision on studies of a similarly tweaked vaccine — against an earlier omicron strain — rather than the exact recipe.
So the new data “reassures us that this was a good decision to move to this bivalent vaccine,” FDA vaccine chief Dr. Peter Marks told The Associated Press. “Right now is the time for people to consider going out and get the updated” booster.
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