Outbreaks of highly pathogenic avian influenza (H5N2) in Italy during October 1997 to January 1998
| Autor: | David E. Swayne, Stefano Marangon, Lucia Selli, D. J. Alexander, Ilaria Capua, E. Parenti, Manuela Dalla Pozza, F. M. Cancellotti |
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| Rok vydání: | 2016 |
| Předmět: |
Veterinary medicine
medicine.medical_specialty General Immunology and Microbiology Highly pathogenic Outbreak Biology Pathogenicity medicine.disease_cause Virology Influenza A virus subtype H5N1 Food Animals Migratory waterfowl Epidemiology Influenza A virus medicine media_common.cataloged_instance Animal Science and Zoology European union media_common |
| Zdroj: | Avian pathology : journal of the W.V.P.A. 28(5) |
| ISSN: | 0307-9457 |
| Popis: | Between the month of October 1997 and January 1998, eight outbreaks of highly pathogenic avian influenza were diagnosed in the Veneto and Friuli-Venezia Giulia regions in north-eastern Italy. For each of the eight outbreaks, influenza A virus of subtype H5N2 was isolated and the inoculation of susceptible chickens confirmed these viruses to be extremely virulent with intravenous pathogenicity indices in 6-week-old chickens of 2.98 to 3.00. Although it was not possible to trace the origin of infection, the epidemiological investigation revealed connections between several outbreaks and emphasized the well-known risk factors for avian influenza such as bird movement, rearing of mixed populations and contact with migratory waterfowl. Control measures listed in European Union directive 92/40/EEC were implemented promptly and spread of the infection to intensively-reared domestic poultry was avoided. |
| Databáze: | OpenAIRE |
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