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    Berl Munch Tierarztl Wochenschr. 2006 Mar-Apr;119(3-4):132-9.

    [Influenza virus infections in migrating waterfowl: results of a two year study in Germany].

    [Article in German]

    Source

    Friedrich-Loeffler-Institut, Bundesforschungsinstitut für Tiergesundheit, OIE und nationales Referenzlabor für Geflügelpest und Newcastle Krankheit, Insel Riems. anja.globig@fli.bund.de

    Abstract

    In order to determine the actual prevalence of avian influenza viruses (AIV) in wild birds in Germany, extensive surveillance studies were carried out between March 2003 and January 2005. More than 3.000 samples of 79 different species of wild birds (migratory and resident birds) were taken and 1.151 established pools investigated. Samples came from 80 different regions of Germany. Forty AIV isolates representing 14 combinations of eight different hemagglutinin and eight neuraminidase subtypes, among them H5 and H7, were identified. All H5 and H7 isolates were found to be of low pathogenicity. The overall incidence of the investigated pools based on virus isolation was 3,5 % for AIV, with considerable variability noted among species, season and location. All AIV were isolated from birds sampled in autumn. Most of the AIV isolates came from the resting or wintering areas of mallards breeding far north. This study adds to the understanding of the ecology of influenza viruses in wild birds and empahsizes the constant need for surveillance in times of an ongoing and expanding epidemic of highly pathogenic AI.

    PMID:
    16573203
    [PubMed - indexed for MEDLINE]

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