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Gewählte Publikation:

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Publikationstyp: Zeitschriftenaufsatz
Dokumenttyp: Originalarbeit

Jahr: 2012

AutorInnen: Gaidet, N; Ould El Mamy, AB; Cappelle, J; Caron, A; Cumming, GS; Grosbois, V; Gil, P; Hammoumi, S; de Almeida, RS; Fereidouni, SR; Cattoli, G; Abolnik, C; Mundava, J; Fofana, B; Ndlovu, M; Diawara, Y; Hurtado, R; Newman, SH; Dodman, T; Balança, G

Titel: Investigating avian influenza infection hotspots in old-world shorebirds.

Quelle: Plos One. 2012; 7(9):E46049



Autor/innen der Vetmeduni Vienna:

Fereidouni Sasan

Diese Publikation wurde nicht im Namen der Vetmeduni Vienna erstellt und ist deshalb ausschließlich der persönlichen Publikationsliste des/der Autors/Autorin zugeordnet!


Abstract:
Heterogeneity in the transmission rates of pathogens across hosts or environments may produce disease hotspots, which are defined as specific sites, times or species associations in which the infection rate is consistently elevated. Hotspots for avian influenza virus (AIV) in wild birds are largely unstudied and poorly understood. A striking feature is the existence of a unique but consistent AIV hotspot in shorebirds (Charadriiformes) associated with a single species at a specific location and time (ruddy turnstone Arenaria interpres at Delaware Bay, USA, in May). This unique case, though a valuable reference, limits our capacity to explore and understand the general properties of AIV hotspots in shorebirds. Unfortunately, relatively few shorebirds have been sampled outside Delaware Bay and they belong to only a few shorebird families; there also has been a lack of consistent oropharyngeal sampling as a complement to cloacal sampling. In this study we looked for AIV hotspots associated with other shorebird species and/or with some of the larger congregation sites of shorebirds in the old world. We assembled and analysed a regionally extensive dataset of AIV prevalence from 69 shorebird species sampled in 25 countries across Africa and Western Eurasia. Despite this diverse and extensive coverage we did not detect any new shorebird AIV hotspots. Neither large shorebird congregation sites nor the ruddy turnstone were consistently associated with AIV hotspots. We did, however, find a low but widespread circulation of AIV in shorebirds that contrast with the absence of AIV previously reported in shorebirds in Europe. A very high AIV antibody prevalence coupled to a low infection rate was found in both first-year and adult birds of two migratory sandpiper species, suggesting the potential existence of an AIV hotspot along their migratory flyway that is yet to be discovered.

Keywords Pubmed: Africa
Animals
Animals, Wild/immunology
Animals, Wild/virology*
Antibodies, Viral/immunology
Asia
Charadriiformes/immunology
Charadriiformes/virology*
Delaware
Europe
Influenza A virus/immunology
Influenza A virus/isolation & purification*
Influenza in Birds/epidemiology*
Influenza in Birds/immunology
Seasons
Species Specificity


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