A third dose of 's vaccine for children aged five to 11 raises Omicron-fighting antibody levels 36-fold, the jabs manufacturer said today. The New York City-based pharmaceutical giant said its results 'reinforce' offering children top-up jabs to 'maintain' protection against the virus.But the Food and Drug Administration () — vaccine regulator in the U.S. — has warned it will not approve extra shots for the age group until more are fully vaccinated.
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