Serological Investigation of H9N2 Avian Influenza Virus in Slaughtered Water Buffaloes (Bubalus bubalis) in Khuzestan, Iran

Document Type: Short Communication

Authors

Department of Clinical Sciences, School of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran

Abstract

The aim of the present was to evaluate the prevalence of H9N2-specific antibodies among water buffaloes (Bubalus bubalis). To this end, blood samples were obtained from 80 randomly selected water buffaloes, 40 cases of which were obtained in the winter months, and 40 cases were sampled in the spring months. The presence of H9N2-specific antibody was determined by hemagglutination inhibition method. The antibody was diagnosed in 14 buffaloes (i.e., 10 males and 4 females). There were no significant differences between the two genders and between different age groups in terms of antibody prevalence. The presence of the antibody had a seasonal pattern; in this regard, all positive cases were found in the winter months (P<0.01). Detection of antibody against H9N2 in water buffaloes suggests the presence of an avian-water buffalo cycle of H9N2 virus. Additional research is needed for the detection of the probable epidemiologic role of buffaloes in the interspecies transmission and pathogenesis of H9N2 avian influenza viruses.

Keywords

Main Subjects


Article Title [French]

Etude Sérologique sur le Virus H9N2 de la Grippe Aviaire cheze les Buffle des Marais Abattus (Bubalus bubalis) dans la Région du Khouzestan, Iran

Abstract [French]

Cetteétude visait l’évaluation de la prévalence d’anticorps spécifiques du H9N2 chez les buffles des marais (Bubalus bubalis). Dans ce but, des échantillons de sang ont été prélevés sur 80 buffles des marais choisis au hasard, dont 40 cas ont été obtenus pendant les mois d’hiver et 40 cas ont été échantillonnés durant les mois de printemps. La présence d'anticorps spécifique de H9N2 a été déterminée par la méthode d'inhibition de l'hémagglutination. La présence danticorps spécifique a été diagnostiquée chez 14 buffles (soit 10 mâles et 4 femelles). Il n'y avait pas de différences significatives liées ausexe et entre les différents groupes d'âge en termes de prévalence des anticorps spécifiques anti- H9N2. La présence de ces anticorps montrait un schéma saisonnier étant donné quetous les cas positifs ont été découverts pendant les mois d'hiver (p<0,01). La détection d'anticorps anti-H9N2 chez les buffles des marais suggère la présence d'un cycle de transmission du virus H9N2 impliquant les oiseaux, l’eau des marais et les buffles. Des recherches supplémentaires sont nécessaires pour détecter le rôle épidémiologique probable des buffles dans la transmission inter-espèces et la pathogenèse des virus de la grippe aviaire H9N2.

Keywords [French]

  • Sérologie
  • Grippe
  • H9N2
  • Bubalus bubalis
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