evidence: The World Health Organization’s system of classifying adverse events following immunization (AEFI) does allow for the recording and investigation of adverse events even after vaccines are licensed for use. Peer-reviewed studies and ongoing AEFI surveillance using systems such as the US-based Vaccine Adverse Event Reporting System (VAERS) show that adverse events continue to be monitored post-licensure. However, the WHO’s AEFI protocol is not implemented by the US healthcare system, so it does not make sense to claim that the protocol enables the US government to cover up vaccine deaths.