Absence of detection of highly pathogenic H5N1 in migratory waterfowl in southern France in 2005-2006.
Infect Genet Evol
; 7(5): 604-8, 2007 Sep.
Article
en En
| MEDLINE
| ID: mdl-17586100
ABSTRACT
During fall 2005, the rapid and wide spread of highly pathogenic (HP) H5N1 avian influenza viruses (AIV) outside Asia alerted European health authorities. Because of abnormal and recurrent field mortality, wild migratory birds were considered to be the main dispersing agent of the virus at an intercontinental scale. European wintering wetlands, such as the Camargue (Rhône delta, France), are identified as potential hot spots for the risk of introduction and transmission of bird-borne diseases. In this study, we investigated the role of migratory waterbirds (mainly ducks) in the spread of HP H5N1 viruses. We combined molecular analysis of living and freshly killed birds with population surveillance (aerial censuses and death surveillance). We sampled 1345 birds belonging to 17 waterbird species (3 orders) in the Camargue between September 2005 and March 2006. The prevalence of AIV was 1.8%. We did not detect HP H5N1 virus. Population censuses did not reveal any population decreases nor abnormal mortalities. We discuss, in the light of these results, the implication of wild migratory ducks in the arrival of HP H5N1 AIV in Europe.
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Bases de datos:
MEDLINE
Asunto principal:
Anseriformes
/
Subtipo H5N1 del Virus de la Influenza A
/
Gripe Aviar
Tipo de estudio:
Diagnostic_studies
/
Risk_factors_studies
Límite:
Animals
País/Región como asunto:
Europa
Idioma:
En
Revista:
Infect Genet Evol
Asunto de la revista:
BIOLOGIA
/
DOENCAS TRANSMISSIVEIS
/
GENETICA
Año:
2007
Tipo del documento:
Article
País de afiliación:
Francia