title: [Serologic studies on the presence of antibodies against Haemophilus (Actinobacillus) pleuropneumoniae at swine breeding farms in North Brabant].
abstract: Serological screening for the presence of antibodies to both H. pleuropneumoniae serotype 2 and serotype 9 using the complement fixation test was carried out on twenty-nine piglets production farms of an integrated group in the province of North Brabant. Antibodies to H. pleuropneumoniae serotype 2 and serotype 9 were not detected on six of the twenty-nine farms when a single screening was performed. The proportions of farms with animals serologically positive in regard to serotypes 2 and 9 were 59 and 34 per cent respectively. Of the specimens on farms with seropositive animals, those positive for serotype 2 averaged 13 per cent, those positive for antibodies to serotype 9 averaging 9 per cent. When a re-examination was made within two months after the first screening, animals showing antibodies to serotype 2 or serotype 9 were present on three of the six pig-breeding farms which were negative for these antibodies at first examination. When a third investigation was carried out within two months after the re-examination, antibodies to serotypes 2 or 9 were also detected on the remaining farms which were negative for antibodies in the two previous investigations.
authors.affiliation: Gezondheidsdienst voor Dieren in Noord-Brabant, Boxtel.
authors.forename: W A
authors.initials: WA
authors.lastname: Hunneman
authors.forename: A
authors.initials: A
authors.lastname: van der Steen
authors.forename: M T
authors.initials: MT
authors.lastname: Voets
authors.forename: J
authors.initials: J
authors.lastname: Lommerse
authors.forename: A M
authors.initials: AM
authors.lastname: Kuysten
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000302:isolation & purification*; D003168:Complement Fixation Tests / Q000662:veterinary; D006190:Haemophilus / Q000276:immunology*; D009426:Netherlands; D011001:Pleuropneumonia / Q000382:microbiology / Q000662:veterinary; D013552:Swine / Q000276:immunology*; D013553:Swine Diseases / Q000276:immunology
chemical_list: D000914:Antibodies, Viral
vernacular_title: Serologisch onderzoek naar het voorkomen van antilichamen tegen Haemophilus (Actinobacillus) pleuropneumoniae op varkensvermeerderingsbedrijven in Noord-Brabant.