Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015

Hatem S. Abd El-Hamid; Hany F. Ellakany; Ahmed R. Elbestawy; Ahmed R. Gado

doi:10.5455/ajvs.220473

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Original Article

AJVS. 2018; 56(2): 54-61

doi: 10.5455/ajvs.220473

Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015

Hatem S. Abd El-hamid, Hany F. Ellakany, Ahmed R. Elbestawy, Ahmed R. Gado.

Abstract
Avian influenza virus H9N2 is a panzootic pathogen that affects poultry causing mild to moderate respiratory distress but has been associated with high morbidity and considerable mortality. In this study, one hundred and twenty coloacal and tracheal swabs and organs (trachea, lung and spleen) were collected from broiler chicken flocks in 8 Egyptian governorates from summer 2014 to spring 2015. Results of RT-PCR revealed that 36 flocks were positive out of 120 flocks for H9N2 (30%) with seasonal distribution as follow: 0.8% in summer of 2014, 5.8% in Autumn of 2014, 19.2% in winter of 2014 and 4.1% in Spring of 2015. Sequencing of HA gene and phylogenetic analysis of 7 selected H9N2 isolates representative of different governorates indicated that all isolates belong to G1-like lineage and are closely related to other Middle East H9N2 isolates.

Key words: H9N2, broilers, AIV, phylogenetic tree

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Pubmed Style

El-hamid HSA, Ellakany HF, Elbestawy AR, Gado AR. Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015. AJVS. 2018; 56(2): 54-61. doi:10.5455/ajvs.220473

Web Style

El-hamid HSA, Ellakany HF, Elbestawy AR, Gado AR. Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015. https://www.alexjvs.com/?mno=220473 [Access: May 06, 2025]. doi:10.5455/ajvs.220473

AMA (American Medical Association) Style

El-hamid HSA, Ellakany HF, Elbestawy AR, Gado AR. Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015. AJVS. 2018; 56(2): 54-61. doi:10.5455/ajvs.220473

Vancouver/ICMJE Style

El-hamid HSA, Ellakany HF, Elbestawy AR, Gado AR. Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015. AJVS. (2018), [cited May 06, 2025]; 56(2): 54-61. doi:10.5455/ajvs.220473

Harvard Style

El-hamid, H. S. A., Ellakany, . H. F., Elbestawy, . A. R. & Gado, . A. R. (2018) Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015. AJVS, 56 (2), 54-61. doi:10.5455/ajvs.220473

Turabian Style

El-hamid, Hatem S. Abd, Hany F. Ellakany, Ahmed R. Elbestawy, and Ahmed R. Gado. 2018. Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015. Alexandria Journal of Veterinary Sciences, 56 (2), 54-61. doi:10.5455/ajvs.220473

Chicago Style

El-hamid, Hatem S. Abd, Hany F. Ellakany, Ahmed R. Elbestawy, and Ahmed R. Gado. "Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Commercial Broiler Chickens in Egypt during 2014-2015." Alexandria Journal of Veterinary Sciences 56 (2018), 54-61. doi:10.5455/ajvs.220473

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APA (American Psychological Association) Style

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