Influenza virus circulation in wild aquatic birds in Italy during H5N2 and H7N1 poultry epidemic periods (1998 to 2000)

Avian Pathology : Journal of the W.V.P.A
Maria A De MarcoIsabella Donatelli

Abstract

Two epidemics of avian influenza due to H5 and H7 highly pathogenic viruses occurred in poultry in Italy in 1997/98 and 1999/2000, respectively. The circulation of these serotypes in wild aquatic birds was investigated examining 638 cloacal swabs and 621 sera collected from 150 gulls, 162 coots, and 326 ducks trapped in Italian wetlands from 1998 to 2000. Seroprevalences against influenza A viruses, detected by a double-antibody sandwich-blocking enzyme-linked immunosorbent assay (ELISA), were 11% in gulls, 16% in coots, and 45% in ducks. Among the Anatidae group, duck species wintering in Mediterranean areas showed significantly higher values than ducks wintering in South-Saharan areas of Africa. In order to detect H5 and H7 antibodies, the haemagglutination-inhibition assay and two competitive ELISA tests (H5-ELISA and H7-ELISA) using monoclonal antibodies specific for H5 and H7 subtypes were performed. None of the aquatic bird species were found seropositive for H7 subtype, whereas H5-positive sera were found by both the haemagglutination-inhibition and ELISA assays in ducks only. The highest H5 seroprevalences were detected by H5-ELISA; overall, 5% (10/201) of duck species wintering in Mediterranean areas tested positive by...Continue Reading

References

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Citations

Aug 6, 2009·Archives of Virology·Edgar SimulunduAyato Takada
Jun 6, 2013·Virus Research·Yi Guan, Gavin J D Smith
Jul 11, 2007·Avian Pathology : Journal of the W.V.P.A·Calogero TerreginoIlaria Capua
Nov 22, 2013·Acta Veterinaria Scandinavica·Trine H JensenPoul H Jørgensen
Jun 6, 2014·PloS One·Estefanía Jurado-TarifaIgnacio García-Bocanegra
Jan 16, 2014·Epidemiology and Infection·E M AbdelwhabT C Mettenleiter
Jan 24, 2014·Critical Reviews in Microbiology·Audrey ArnalElsa Jourdain
Jan 3, 2016·Journal of Virological Methods·Jianmei YangZejun Li
Jan 5, 2010·Virus Research·Núria BusquetsNatàlia Majó
May 21, 2009·Influenza and Other Respiratory Viruses·Uta HesterbergIan Brown
Jul 31, 2014·Influenza and Other Respiratory Viruses·Zékiba TarnagdaNdahwouh Talla Nzussouo
Apr 2, 2013·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Jonathan RunstadlerMandy Keogh
Nov 24, 2012·Journal of Virological Methods·Ana MorenoPaolo Cordioli

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Methods Mentioned

BETA
enzyme-linked immunosorbent assay
ELISA

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