Avian influenza virus monitoring in wintering waterbirds in Iran, 2003-2007

Fereidouni Sasan R., Werner Ortrud, Starick Elke, Beer Martin, Harder Timm C., Aghakhan Mehdi, Modirrousta Hossein, Amini Hamid, Kharrazian Moghaddam Majid, Bozorghmehrifard Mohammad H., Akhavizadegan Mohammad A., Gaidet Nicolas, Newman Scott, Hammoumi Saliha, Cattoli Giovanni, Globig Anja, Hoffmann Bernd, Sehati Mohammad E., Masoodi Siamak, Dodman Tim, Hagemeijer Ward, Mousakhani Shirin, Mettenleiter Thomas C.. 2010. Avian influenza virus monitoring in wintering waterbirds in Iran, 2003-2007. Virology Journal, 7 (43), 14 p.

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Quartile : Q2, Sujet : VIROLOGY

Abstract : Background: Virological, molecular and serological studies were carried out to determine the status of infections with avian influenza viruses (AIV) in different species of wild waterbirds in Iran during 2003-2007. Samples were collected from 1146 birds representing 45 different species with the majority of samples originating from ducks, coots and shorebirds. Samples originated from 6 different provinces representative for the 15 most important wintering sites of migratory waterbirds in Iran. Results: Overall, AIV were detected in approximately 3.4% of the samples. However, prevalence was higher (up to 8.3%) at selected locations and for certain species. No highly pathogenic avian influenza, including H5N1 was detected. A total of 35 AIVs were detected from cloacal or oropharyngeal swab samples. These positive samples originated mainly from Mallards and Common Teals. Of 711 serum samples tested for AIV antibodies, 345 (48.5%) were positive by using a nucleoprotein-specific competitive ELISA (NP-C-ELISA). Ducks including Mallard, Common Teal, Common Pochard, Northern Shoveler and Eurasian Wigeon revealed the highest antibody prevalence ranging from 44 to 75%. Conclusion: Results of these investigations provide important information about the prevalence of LPAIV in wild birds in Iran, especially wetlands around the Caspian Sea which represent an important wintering site for migratory water birds. Mallard and Common Teal exhibited the highest number of positives in virological and serological investigations: 43% and 26% virological positive cases and 24% and 46% serological positive reactions, respectively. These two species may play an important role in the ecology and perpetuation of influenza viruses in this region. In addition, it could be shown that both oropharyngeal and cloacal swab samples contribute to the detection of positive birds, and neither should be neglected. (Résumé d'auteur)

Mots-clés Agrovoc : Influenzavirus aviaire, Oiseau aquatique, Grippe aviaire

Mots-clés géographiques Agrovoc : Iran République islamique

Classification Agris : L73 - Animal diseases

Champ stratégique Cirad : Axe 4 (2005-2013) - Santé animale et maladies émergentes

Auteurs et affiliations

  • Fereidouni Sasan R., Federal Research Institute for Animal Health (DEU)
  • Werner Ortrud, Federal Research Institute for Animal Health (DEU)
  • Starick Elke, Federal Research Institute for Animal Health (DEU)
  • Beer Martin, Federal Research Institute for Animal Health (DEU)
  • Harder Timm C., Federal Research Institute for Animal Health (DEU)
  • Aghakhan Mehdi, Razi Research Institute (IRN)
  • Modirrousta Hossein, Razi Research Institute (IRN)
  • Amini Hamid, Wildlife Bureau (IRN)
  • Kharrazian Moghaddam Majid, Wildlife Bureau (IRN)
  • Bozorghmehrifard Mohammad H., Université de Téhéran (IRN)
  • Akhavizadegan Mohammad A., Razi Research Institute (IRN)
  • Gaidet Nicolas, CIRAD-ES-UPR AGIRs (FRA)
  • Newman Scott, FAO (ITA)
  • Hammoumi Saliha, CIRAD-BIOS-UMR CMAEE (FRA)
  • Cattoli Giovanni, Istituto zooprofilattico sperimentale delle Venezie (ITA)
  • Globig Anja, Federal Research Institute for Animal Health (DEU)
  • Hoffmann Bernd, Federal Research Institute for Animal Health (DEU)
  • Sehati Mohammad E., Wildlife Bureau (IRN)
  • Masoodi Siamak, Wildlife Bureau (IRN)
  • Dodman Tim, Wetlands International (NLD)
  • Hagemeijer Ward, Wetlands International (NLD)
  • Mousakhani Shirin, Bird Conservation Society of Iran (IRN)
  • Mettenleiter Thomas C., Federal Research Institute for Animal Health (DEU)

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