The COVID-19 vaccines made by Pfizer-BioNTech and Moderna do not cause such conditions as female infertility, myocardial infarction, Bell palsy, or Guillain-Barré syndrome in adults, according to a report by the National Academies of Sciences, Engineering, and Medicine that reviewed evidence for potential harms for 19 conditions associated with these vaccines. There was not enough evidence involving children to draw conclusions about possible harms.
