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July 25, 2021
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Pfizer to test COVID-19 vaccine in larger group of children below 12

FILE: Family members look on as Jack Frilingos, 12, is inoculated with Pfizer’s vaccine against coronavirus disease (COVID-19) after Georgia authorized the vaccine for ages over 12 years, at Dekalb Pediatric Center in Decatur, Georgia, U.S. May 11, 2021. REUTERS/Chris Aluka Berry/File Photo (Reuters)

NEW YORK (Reuters) — Pfizer said on Tuesday it will begin testing its COVID-19 vaccine in a bigger group of children under age 12 after selecting a lower dose of the shot in an earlier stage of the trial.

The study will enroll up to 4,500 children at more than 90 clinical sites in the United States, Finland, Poland and Spain, the company said.

Based on safety, tolerability, and the immune response generated by 144 children in a phase I study of the two-dose shot, Pfizer said it will test a dose of 10 micrograms in children between 5 and 11 years of age and 3 micrograms for the age group of 6 months to 5.

The vaccine – made by Pfizer and German partner BioNTech – has been authorized for use in children as young as 12 in Europe, the United States and Canada. They receive the same dose as adults: 30 micrograms.

Nearly 7 million teens have received at least one dose of the vaccine in the United States, according to the U.S. Centers for Disease Control and Prevention.

Inoculating children and young people is considered a critical step toward reaching “herd immunity” and taming the COVID-19 pandemic.

Still, scientists in the United States and elsewhere are studying the possibility of a link between heart inflammation and mRNA vaccines, particularly in young men. Both Pfizer and Moderna’s vaccines are mRNA shots.

Israel’s Health Ministry said last week it had found the small number of myocarditis cases observed mainly in young men who received the Pfizer vaccine there were likely linked to their vaccination. The cases were generally mild and short lasting.

Pfizer has said that it is aware of the Israeli observations of myocarditis and that no causal link to its vaccine has been established.

(Reporting by Ankur Banerjee in Bengaluru and Michael Erman in New York; Editing by Arun Koyyur and Will Dunham)

© Copyright Thomson Reuters 2021

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