While COVID-19 generally isn’t as dangerous to youngsters as to adults, some children do become severely ill or even die.
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.
Preliminary data suggested the three-dose series is 80% effective in preventing symptomatic COVID-19, the companies said, but they cautioned the calculation is based on just 10 cases diagnosed among study participants by the end of April. The study rules state that at least 21 cases are needed to formally determine effectiveness, and Pfizer promised an update as soon as more data is available.
“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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