Children who received the AstraZeneca or Pfizer-BioNTech COVID-19 vaccines faced an elevated risk of epilepsy and appendicitis, according to a new study. Pfizer recipients were also more likely to suffer from demyelinating disease or heart inflammation, researchers found. A Professor of Clinical Epidemiology at the University of Oxford’s Nuffield Department of Primary Health Care Sciences, United Kingdom, Dr. Julia Hippisley-Cox, …