The effectiveness of the vaccine was 70% for children 6 months to 4 years of age.
Adverse effects of the vaccine were mild to moderate.
Pfizer is working with the FDA to approve the vaccine for children under 11 years of age.
The effectiveness of the vaccine was 70% for children 6 months to 4 years of age.
Adverse effects of the vaccine were mild to moderate.
Pfizer is working with the FDA to approve the vaccine for children under 11 years of age.