Types of vaccine part 49

Intranasal flu vaccine

In October 2000, an inactivated intranasal flu vaccine was licensed in Switzerland. Results from a case control study and a case-series analysis indicated a significantly increased risk of Bell’s palsy, a one-sided paralysis of facial muscles, developing after intranasal immunization with the vaccine. Following spontaneous reports of Bell’s palsy in vaccine recipients, the producer decided not to further market the vaccine. 

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