Surveillance for Adverse Events After COVID-19 mRNA Vaccination | Vaccination | JAMA | JAMA Network
Just check out Kaiser Permanente which has monitored over 6.2 mil of their patients for adverse effects. This is fresh off the press.
Question Are mRNA COVID-19 vaccines associated with increased risk for serious health outcomes during days 1 to 21 after vaccination?
Findings In this interim analysis of surveillance data from 6.2 million persons who received 11.8 million doses of an mRNA vaccine, event rates for 23 serious health outcomes were not significantly higher for individuals 1 to 21 days after vaccination compared with similar individuals at 22 to 42 days after vaccination.
Meaning This analysis found no significant associations between vaccination with mRNA COVID-19 vaccines and selected serious health outcomes 1 to 21 days after vaccination, although CIs were wide for some rate ratio estimates and additional follow-up is ongoing.