abstract |
The present invention provides a vaccine composition for nasal mucosal administration containing an influenza virus antigen, polyriboinosinic acid / polyribocytidylic acid (poly (I: C)) or a derivative thereof, and a carboxyvinyl polymer. The present invention also provides a method for preventing influenza, comprising the step of administering the vaccine composition to a subject in need thereof at least once in the nasal mucosa. [Selection figure] None |