Pfizer COVID shots appear 73% effective in children under 5

A vial of the Pfizer COVID-19 vaccine for children 6 months through 4 years old is seen June 21 at Montefiore Medical Group in the Bronx borough of New York. (AP Photo/Mary Altaffer)

Pfizer’s COVID-19 vaccine was 73% effective in protecting children younger than 5 as omicron spread in the spring, the company announced Tuesday.