AI Article Synopsis
- This study is the first to report the isolation of the H9N2 avian influenza virus from commercial bobwhite quail in Egypt, with no visible signs of illness in the infected birds.
- The virus was confirmed through virus isolation and real-time PCR from cloacal swabs, and no other AIV subtypes like H5 and H7 were found.
- Genetic analysis showed that the isolated H9N2 virus closely matches strains circulating in the Middle East, suggesting potential connections with neighboring countries' virus lineages.
Article Abstract
This study describes the first isolation of H9N2 avian influenza virus (AIV) from commercial bobwhite quail (Colinus virginianus) in Egypt. Infected birds showed neither clinical signs nor mortality. Virus isolation and real-time reverse transcription polymerase chain reaction confirmed the presence of the H9N2 virus in cloacal swab samples collected at 35 days of age and the absence of other AIV subtypes, including H5 and H7. The hemagglutinin and neuraminidase genes of the isolated virus showed 99.1% and 98.2% nucleotide identity and 97.3% and 100% amino acid identity, respectively, to those of H9N2 viruses currently circulating in poultry in the Middle East. Phylogenetically, the Egyptian H9N2 virus was closely related to viruses of the G1-like lineage isolated from neighbouring countries, indicating possible epidemiological links.
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| http://dx.doi.org/10.1007/s00705-012-1269-z | DOI Listing |
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