Concurrent Infection with Influenza A-prime and B Viruses in the Same Individual

Abstract

A case of concurrent infection with both influenza A-prime and B viruses was reported. The diagnosis was established by a significant coincident, rise of antibody titers against both influenza A-prime and B virus. Moreover, she was attacked about one week later with influenza A which was again confirmed by the hemagglutination-inhibition test then performed (Cf. Table I).