Can inactivated influenza vaccines cause Bell palsy (idiopathic facial paralysis) (IFP)?

Updated: Jun 14, 2019
  • Author: Danette C Taylor, DO, MS, FACN; Chief Editor: Selim R Benbadis, MD  more...
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Additional support for a viral etiology was seen when intranasal, inactivated influenza vaccine was strongly linked to the development of Bell palsy. [17, 18] With those cases, however, it is not clear whether another component of the vaccine caused the paresis, which was then accompanied by a reactivation of HSV infection.

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