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Serological Survey of Avian Influenza (H9N2) Among Different Occupational Groups in Tehran and Qazvin Provinces in IR Iran

AUTHORS

Elaheh Anvar 2 , Seyed Masoud Hosseini 1 , * , Masoumeh Tavasoti Kheiri 2 , Vahideh Mazaheri 2 , Kurosh Fazaei 3 , Maryam Shabani 3 , Effat Alizadeh 1 , Mansoureh Tabatabaiean 2 , Ali Torabi 2

AUTHORS INFORMATION

2 Influenza Research Lab, Pasteur Institute of Iran, Tehran, IR Iran

1 Department of Microbiology, Faculty of Biological Science, Shahid Beheshti University, G.C., Tehran, IR Iran

3 Department of Poultry Disease, Iran Veterinary organization, Tehran, IR Iran

ARTICLE INFORMATION

Jundishapur Journal of Microbiology: 6 (4); 5441
Published Online: June 9, 2013
Article Type: Research Article
Received: May 7, 2012
Accepted: September 29, 2012
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Abstract

Background: In the last decade H9N2 avian influenza viruses had caused outbreaks in poultry in many parts of the world. This subtype could infect other animals such as human and pig. Avian H9N2 virus has acquired receptor binding characteristics typical of humans strains, increasing the potential for reassortment in both human and pig respiratory tracts. This indicates that the A/H9N2 would be a potential threat to human population.

Objectives: The aim of this was to indentify the presence of A/H9N2 virus among different high risk occupational groups, in Tehran and Qazvin provinces in seasonal outbreak in Iran.

Material and Methods: 182 sera were collected from the poultry farms and slaughterhouse workers, and animal vaccinators and also veterinarians in seasonal outbreak (December 2010, January 2011 and July 2011). Hemagglutination Inhibition (HI) and ELISA assays were performed to detect anti-H9 antibody. Sera adsorption was performed to eliminate cross-reactivity between anti-H3 and anti-H9. In HI test the titer ? 20 was considered to be positive.

Results: Only 3 (1.64%) in HI that showed titer ? 20 and 21 (11.53%) sera in ELISA showed OD > 0.7 were assumed positive for H9 virus infection.

Conclusions: The findings of this study show that H9N2 avian influenza virus can infect human. Repeated interspecies transmission H9N2 viruses from poultry to human raises concerns about adapting of this subtype with new host.

Keywords

Avian Influenza A H9N2 Subtype Occupational Groups Iran

© 2013, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.
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