Potential of Low Pathogenicity Avian Influenza Viruses of Wild Bird Origin to Establish Experimental Infections in Turkeys and Chickens
| Autor: | C. R. Pope, Cindy Driscoll, Richard D. Slemons, Brian S. Ladman, J. Gelb |
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| Rok vydání: | 2010 |
| Předmět: |
Turkeys
Veterinary medicine animal structures animal diseases Biology medicine.disease_cause Blood serum Food Animals medicine Influenza A virus Waterfowl Animals Infectivity General Immunology and Microbiology Infectious dose Broiler virus diseases biology.organism_classification Virology Influenza A virus subtype H5N1 medicine.anatomical_structure Influenza in Birds Animal Science and Zoology Chickens Respiratory tract |
| Zdroj: | Avian Diseases. 54:1091-1094 |
| ISSN: | 1938-4351 0005-2086 |
| DOI: | 10.1637/9228-010410-resnote.1 |
| Popis: | The potential of low pathogenicity (LP) avian influenza virus (AIV) isolates of wild bird origin to establish infection in commercial turkeys and broiler chickens was studied. Isolates, representing subtypes H5N1, H7N3, H6N2, and H3N6, were recovered in 2005 and 2006 from waterfowl and shorebirds in the Delmarva Peninsula region of the east coast of the United States. The LP AIV isolates were not pathogenic for 2-wk-old meat-type turkeys and broiler chickens. No mortality, clinical signs, or gross lesions were observed following intratracheal and conjunctival sac routes of exposures with 10(6.0) EID50 (embryo infectious dose) per bird. Isolates resulting in an established infection based on virus isolation were: A/mallard/Maryland/1159/ 2006 (H5N1) in the upper respiratory tract of turkeys; A/mallard/Delaware/418/2005 (H7N3) in the upper respiratory and intestinal tracts of turkeys and chickens; and A/shorebird-environment/Delaware/251/2005 (H3N6) in the upper respiratory and intestinal tracts of chickens. Infections were also confirmed by production of AIV-specific serum antibodies detected by hemagglutination inhibition. |
| Databáze: | OpenAIRE |
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