Pfizer says its Covid vaccine is 91% effective in kids of ages 5 to 11

Pfizer Inc. said the Covid shot it’s developed with BioNTech SE was 90.7% effective against symptomatic cases in young kids ages 5 to 11, according to a briefing document posted on the Food and Drug Administration website.

Pfizer posted the document in advance of a key hearing scheduled for Oct. 26 where an advisory panel will debate whether the vaccine should be cleared for young children. The efficacy result is based on a trial of about 2,250 children, according to the briefing documents.

Outside experts on the FDA’s Vaccines and Related Biological Products Advisory Committee will meet to evaluate Pfizer and