title: [Importance and distribution of serological findings of ornithosis-psittacosis in semi-domestic pigeons].
abstract: Ornithosis-psittacosis is a widely distributed disease in birds throughout the world. A serological study by the complement-fixation test and a few isolation of Chlamyqia were performed on feral pigeon population of Antwerpen city. The incidence of positive cases in Antwerpen averages 58.51 %. For each serum, a serological index (S. I.) was calculated with regard to the intensity of immunological response in different dilutions: S. I. seems to suggest an endemic status of the disease in Antwerpen. Evolution in time of the prevalence and the serological response shows the presence of two peaks: the first one in spring and the last one in summer. This might be explained by some factors influencing the transmission of the infection: between them, one must emphasize the pigeons habits and the ectoparasites.
mesh_terms: D000818:Animals; D001530:Belgium; D001715:Bird Diseases / Q000453:epidemiology*; D002691:Chlamydophila psittaci / Q000302:isolation & purification; D010856:Columbidae; D003168:Complement Fixation Tests; D009956:Psittacosis / Q000453:epidemiology / Q000662:veterinary*; D012621:Seasons
vernacular_title: Importance et répartition de la réponse sérologique de l'ornithose-psittacose chez des pigeons semi-domestiques.