Publikationsdatenbank

Influenza virus risk assessment in falconry (2009)

Art

Vortrag

Autoren

Kohls, A.

Hafez, H. M.

Jansen, A.

Lierz, P.

Lüschow, D.

Schweiger, B

Kongress

10th European AAV conference and 8th scientific ECAMS meeting

Antwerp, Belgium, 17. – 21.03.2009

Quelle

Association of Avian Veterinarians / European Committee: 10th European AAV conference and 8th scientific ECAMS meeting / Association of Avian Veterinarians, European Committee ; European College of Avian Medicine and Surgery : Antwerp, Belgium, 17. - 21. — A Martell ... (Hrsg.)

DCL Print & Sign, 2009 — S. 95–97

ISBN: 978-90-5864-171-7

Sprache

Englisch

Kontakt

Nutztierklinik: Abteilung Geflügel

Königsweg 63
14163 Berlin
+49 30 838 62676
gefluegelkrankheiten@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Background
There is a continuing threat of human infections with avian influenza viruses (AIV). In this regard falconers might be a potential risk group because they have close contact to their hunting birds (raptors such as falcons and hawks) as well as their avian prey such as gulls and ducks. Both (hunting birds and prey birds) seem to be highly susceptible to some AIV strains, especially H5N1. We therefore conducted a field study to investigate AIV infections in falconers, their falconry birds as well as prey birds.

Findings
During 2 hunting seasons (2006/2007 and 2007/2008) falconers took tracheal and cloacal swabs from 1080 prey birds that were captured by their falconry birds (n = 54) in Germany. AIV-RNA of subtypes H6, H9, or H13 was detected in swabs of 4.1% of gulls (n = 74) and 3.8% of ducks (n = 53) using RT-PCR. The remaining 953 sampled prey birds and all falconry birds were negative. Blood samples of the falconry birds tested negative for AIV specific antibodies. Serum samples from all 43 falconers reacted positive in influenza A virus-specific ELISA, but remained negative using microneutralisation test against subtypes H5
and H7 and haemagglutination inhibition test against subtypes H6, H9 and H13.

Conclusion
Although we were able to detect AIV-RNA in samples from prey birds, the corresponding falconry birds and falconers did not become infected. Currently falconers do not seem to carry a high risk for getting infected with AIV through handling their falconry birds and their prey.