Murata et al.: "Four cases of cytokine storm after COVID-19 vaccination: Case report", four cases of death following receipt of second dose of COVID-19 vaccine, with no obvious cause identified
by Paul Alexander
Found immune dysregulation following vaccination. Careful observation & care may be necessary if an abnormally high fever exceeding 40°C occurs after vaccination, even with antipyretic drugs.
SOURCE:
https://pubmed.ncbi.nlm.nih.gov/36045681/
