Adverse events following yellow fever immunization: Report and analysis of 67 neurological cases in Brazil

Highlights • Neurological adverse events after yellow fever vaccination have in general a good prognosis but rarely sequel or even death may occur. • Finding of neurological adverse events is highly dependent on alertness and training. • The age group from 5 to 9 years is the most vulnerable. • Despite the occurrence of neurologic adverse events seen following YF vaccination, the risk benefit balance points to its continued use for those who are at risk.