Auditory and visual hallucinations after influenza vaccine: a case report.

Vaccination against influenza was found in geriatric patients to correlate with a reduced risk of death, hospitalization and costs on health system [Nichol et al. 1994]; vaccination against influenza is indeed recognised by the World Health Organization as an efficacious strategy to prevent the health-threatening effects of influenza viruses [World Health Organization, 2012]. As with all drugs, the vaccine against influenza is associated with some adverse drug reactions (ADRs) [Vaxigrip, 2015]; while some neurological and psychiatric ADRs have been reported no evidence of visual and auditory hallucination exists. A case of extended hallucinations is now reported.