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- After clinical trials, data is submitted to regulatory agencies (like the FDA in the U.S.) for review. The agency evaluates the evidence of safety and efficacy before granting approval.
- Even after approval, vaccine safety continues to be monitored using systems like the Vaccine Adverse Event Reporting System (VAERS) in the U.S. This allows for ongoing assessment of any rare side effects or adverse events that may not have been detected during trials.
