<；P>；PROBLEM TO BE SOLVED: To provide a secretory IgA and/or IgG antiboty production inducer containing an adjuvant and specific to various kinds of viruses. <；P>；SOLUTION: The secretory IgA and/or IgG antiboty production inducer is in the form of powder which is obtained by lyophilizing an inactivated antibody derived from one of various kinds of viruses (especially, West Nile virus, hanta virus, dengue virus, Japanese encephalitis virus, yellow fever virus, tick-borne encephalitis virus, influenza virus, hepatitis C virus, etc.) and Poly (I:C) (a polynucleotide copolymer made from inosinic acid : cytidylic acid) as an adjuvant. By pernasal administration (nasal mucosal inoculation) of this inducer, the inducer serves as a pernasal vaccine affording the favorable secretion of IgA antibody on the nasal mucosa and the response of IgG antibody in the serum. <；P>；COPYRIGHT: (C)2009,JPO&INPIT
