[Seroepidemiological studies on the outbreaks of A/swine type influenza with special reference ot the porcine and the human infection].
D000328:Adult; D000367:Age Factors; D000818:Animals; D004196:Disease Outbreaks; D006801:Humans; D009980:Influenza A virus; D007564:Japan; D008875:Middle Aged; D009976:Orthomyxoviridae Infections / Q000453:epidemiology* / Q000276:immunology / Q000635:transmission / Q000662:veterinary; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology* / Q000276:immunology