title: Seroprevalence of porcine and human influenza A virus antibodies in pigs between 1986 and 1988 in Hassia.
abstract: 1,268 sera collected from slaughtered pigs in Hassia (FRG) from 1986 to 1988 were tested for antibodies against porcine and human influenza A virus strains using the single radial haemolysis test (SRHT). Antibodies against the porcine strains (subtype H1N1) A/Swine/Arnsberg/1/81, A/Swine/Iowa/15/30 and A/New Jersey/7/76 were detected in 411 (32.4%), 318 (25.1%) and 304 (24.0%) of sera, respectively. Up to 1988 a slight increase (10%) in the seroprevalence to A/Swine/Arnsberg/1/81 was noticed, whereas the results obtained with the other strains showed little variation. Antibodies against the human H1N1 strain A/Singapore/6/86 were only found in sera collected 1987 and 1988 in rates of 1.6% and 3.0%. Serological indication of infections with the human H3N2 strains A/Victoria/1/75, A/Hong Kong/1/68 and A/Philippines/2/82 could be shown in 286 (22.6%), 178 (14.4%) and 135 (10.6%) of the serum samples. Within the three year period the rate of sera positive for antibodies against A/Philippines/2/82 increased from 6.5% to 23.0%, whereas no variation in the rates were found using the other H3N2 strains. Antibodies simultaneously against porcine (H1N1) and human (H3N2) virus strains were detected in 9.9% of all sera tested.
authors.forename: X M
authors.initials: XM
authors.lastname: Zhang
authors.forename: W
authors.initials: W
authors.lastname: Herbst
authors.forename: H
authors.initials: H
authors.lastname: Lange-Herbst
authors.forename: T
authors.initials: T
authors.lastname: Schliesser
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis*; D005860:Germany, West / Q000453:epidemiology; D009980:Influenza A virus / Q000276:immunology*; D009976:Orthomyxoviridae Infections / Q000453:epidemiology / Q000662:veterinary*; D015995:Prevalence; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology*
chemical_list: D000914:Antibodies, Viral