Child-sized doses of Pfizer’s COVID-19 vaccines appear to be safe and effective for kids under 5, federal health officials said, in a key step toward a long-awaited decision to begin vaccinating the youngest Americans.
The FDA said children who received Pfizer’s shots during testing developed high levels of virus-fighting antibodies expected to protect them against coronavirus. That’s the basic threshold needed to win FDA authorization. But additional testing turned up key differences, with stronger results for Pfizer.
On Wednesday, the FDA will ask an independent panel of vaccine experts to debate both companies’ data before voting. The FDA is not required to follow the group’s recommendations, but the process is seen as a key step in publicly vetting the shots. For the youngest children, each company is offering different dose sizes and number of shots, beginning at 6 months through 4 years for Pfizer and through 5 years for Moderna.Pfizer and its partner BioNTech plan to offer two shots three weeks apart followed by a third at least two months later — each one-tenth the dose given to adults. Pfizer is currently the only company with a COVID-19 vaccine for older U.S. children.
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