title: Mixed infections with influenza A and B viruses.
abstract: In the course of an influenza A and B epidemic, influenza virus was isolated from 46 patients. Seven of these patients showed seroconversion against influenza virus plus another respiratory virus. In 9 patients, simultaneous antibody increase against both influenza A and B viruses was demonstrated, but only a single virus type was isolated. In one case the isolated virus population could be separated into type A and B viruses.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis; D002648:Child; D006801:Humans; D009980:Influenza A virus / Q000302:isolation & purification*; D007251:Influenza, Human / Q000382:microbiology*; D009975:Orthomyxoviridae / Q000302:isolation & purification
chemical_list: D000914:Antibodies, Viral