More than 55 percent of children ages 6 months to 2 years of age had a systemic reaction, which is a response beyond the injection site, in response to their first dose of the Pfizer-BioNTech or Moderna COVID-19 vaccines, the CDC said on Sept. 1, and almost 60 percent had a reaction to the second dose of the Moderna vaccine.
… parents of more than 6 percent of the children in the study that was referenced said their child was unable to perform normal activities after the second dose of either the Pfizer-BioNTech or Moderna vaccine.
… About 10 percent of all children 6 months to 2 years were reported to have a “health impact” after getting their first dose of either the Moderna or Pfizer vaccine. For the Moderna vaccine, slightly more children had a health impact after the second dose; for the Pfizer vaccine, it was slightly less.