title: Influenza virus A/swine-outbreaks in domestic pigs and antibody findings in human sera.
abstract: In the last years, the occurrence of influenza viruses A/H1N1 (Hsw1N1) in pig stocks of different countries has been increasingly reported. In general, the isolated viruses were related to the influenza virus A/New Jersey/8/76 H1N1 (Hsw1N1). Human infections were not reported in these outbreaks. Since March 1981, very limited influenza outbreaks in several pig stocks of the GDR with high morbidity and very low lethality have been observed. The illness took an uncomplicated path and generally subsided after 3 days. Some of the virus isolates were examined and typed as influenza virus A/swine/Potsdam/81/H1N1 (Hsw1N1). By serological examinations of convalescent pigs the aetiologic importance of the isolates was confirmed. Infection of the contact persons by the influenza virus A/swine/Potsdam/81 is to be regarded as likely according to the serological results.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis*; D000956:Antigens, Viral / Q000145:classification; D004196:Disease Outbreaks; D005860:Germany, West; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D009980:Influenza A virus / Q000145:classification* / Q000276:immunology; D009439:Neuraminidase / Q000276:immunology; D009976:Orthomyxoviridae Infections / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology / Q000382:microbiology*
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D009439:Neuraminidase