Pfizer Inc. (PFE.N) and BioNTech SE COVID-19 The vaccine has mostly mild side effects in children between the ages of 5 and 11, according to data published Thursday by the US Centers for Disease Control and Prevention.
The data showed that some children reported injection site pain and other systemic reactions such as fatigue and headache after the second dose of the vaccine.
The CDC said it has received reports of 11 cases of myocarditis, a type of heart inflammation, in children aged 5-11 years who received the vaccine. Seven of them had recovered, and four were recovering at the time of the report.
Myocarditis is a rare side effect following mRNA vaccines.
The CDC report states that the US Vaccine Adverse Event Reporting System (VAERS) received 4,249 reports of adverse events, of which 97.6% of cases were not serious.
Cases were reported in VAERS and v-safe, a voluntary smartphone-based safety monitoring system for adverse events following COVID-19 vaccination, between November 3 and December 19.
The agency said about 8.7 million doses of the Pfizer vaccine have been given to children in the age group.
The vaccine was authorized in the United States in late October for children ages 5 to 15 and is the only shot authorized for the age group.
A separate study by the CDC showed that Pfizer’s two-dose vaccine was 92% effective against coronavirus Infection in adolescents aged 12 to 17 years.
The duration of the observation period for analysis coincides with delta version Predominance in the United States, the CDC said.
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