Case report: Recurrent peripheral facial paralysis following two influenza vaccinations in 2009 and 2016.

A 57-year-old female experienced two successive peripheral facial paralysis (PFP) episodes following influenza immunization in 2009 and 2016 with two different vaccines. The similarity of chronology and semiology between the two events and the absence of alternative etiology plead for intrinsic accountability. Extrinsic accountability relies on previous case reports of PFP related to flu vaccination (26 cases in the French pharmacovigilance database and 4 cases in the medical literature).