Three doses of Pfizer’s COVID-19 vaccine offer strong protection for children younger than 5, the company said Monday, another step toward shots for the littlest kids possibly beginning in early summer.
Pfizer has had a bumpy time figuring out its approach. It aims to give tots an extra low dose — just one-tenth of the amount adults receive — but discovered during its trial that two shots didn’t seem quite strong enough for preschoolers. So researchers gave a third shot to more than 1,600 youngsters — from age 6 months to 4 years — during the winter surge of the omicron variant.
While the vaccine effectiveness likely could change somewhat, “all of this is very positive for those parents who are looking forward to having a vaccine for their younger children in the coming months,” said Dr. William Moss of the Johns Hopkins Bloomberg School of Public Health, who was not part of the study.
“We’ve learned in older children and adults that ... we really need three doses to get protection” against newer variants like omicron, Moss said. The FDA has tentatively planned for its expert panel to consider Moderna’s vaccine for older kids a day before taking up the question of shots for the littlest.
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