Pfizer Study Tests Extra COVID Vaccine Dose For Kids Under 5
December 17, 2021 10:09AM PST
A medical staff member prepares the Pfizer-BioNTech COVID-19 vaccine at Tudor Ranch in Mecca, Calif. on Jan. 21, 2021. (AP Photo/Jae C. Hong, File)
(AP) – Pfizer is testing an extra dose of its COVID-19 vaccine for babies and preschoolers enrolled in a study of the shots.
Pfizer had been testing two very low-dose shots in children under age 5, with some data expected by year’s end.
But Pfizer and its partner BioNTech announced Friday they were adding a third dose to the study after a preliminary analysis found 2- to 4-year-olds didn’t have as strong an immune response as expected.
It’s not clear how much the study change will delay the quest for vaccinating the youngest children.
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