Lack of virological and serological evidence for continued circulation of highly pathogenic avian influenza H5N8 virus in wild birds in the Netherlands, 14 November 2014 to 31 January 2016

• Published in: Euro surveillance : bulletin européen sur les maladies transmissibles Vol. 21; no. 38; p. 1
• Main Authors: Poen, Marjolein J, Verhagen, Josanne H, Manvell, Ruth J, Brown, Ian, Bestebroer, Theo M, van der Vliet, Stefan, Vuong, Oanh, Scheuer, Rachel D, van der Jeugd, Henk P, Nolet, Bart A, Kleyheeg, Erik, Müskens, Gerhard J D M, Majoor, Frank A, Grund, Christian, Fouchier, Ron A M
• Format: Journal Article
• Language: English
• Published: Sweden Centre Europeen pour la Surveillance Epidemiologique du SIDA (European Centre for the Epidemiological Monitoring of AIDS) 22.09.2016; European Centre for Disease Prevention and Control (ECDC)
• Subjects: Alterra - Animal ecology; Alterra - Dierecologie; Animal Ecology; Animals; Animals, Wild - virology; Avian flu; avian influenza; Birds; Birds - virology; Dierecologie; Disease Outbreaks - veterinary; emerging or re-emerging diseases; epidemiology; Genes; Hemagglutination Inhibition Tests; Influenza A Virus, H5N8 Subtype - genetics; Influenza A Virus, H5N8 Subtype - pathogenicity; Influenza in Birds - blood; Influenza in Birds - virology; Netherlands - epidemiology; Neutralization Tests; outbreaks; Pathogens; Phylogeny; Polymerase chain reaction; Real-Time Polymerase Chain Reaction; RNA, Viral - genetics; Sentinel Surveillance; Sequence Analysis, DNA; surveillance; viral infections; Virology; Zoonotic Ecology; Zoonotisk ekologi; Netherlands; epidemiology; emerging or re-emerging diseases; viral infections; avian influenza; outbreaks; surveillance
• ISSN: 1560-7917; 1025-496X; 1560-7917
• DOI: 10.2807/1560-7917.ES.2016.21.38.30349

In 2014, H5N8 clade 2.3.4.4 highly pathogenic avian influenza (HPAI) viruses of the A/Goose/Guangdong/1/1996 lineage emerged in poultry and wild birds in Asia, Europe and North America. Here, wild birds were extensively investigated in the Netherlands for HPAI H5N8 virus (real-time polymerase chain reaction targeting the matrix and H5 gene) and antibody detection (haemagglutination inhibition and virus neutralisation assays) before, during and after the first virus detection in Europe in late 2014. Between 21 February 2015 and 31 January 2016, 7,337 bird samples were tested for the virus. One HPAI H5N8 virus-infected Eurasian wigeon (Anas penelope) sampled on 25 February 2015 was detected. Serological assays were performed on 1,443 samples, including 149 collected between 2007 and 2013, 945 between 14 November 2014 and 13 May 2015, and 349 between 1 September and 31 December 2015. Antibodies specific for HPAI H5 clade 2.3.4.4 were absent in wild bird sera obtained before 2014 and present in sera collected during and after the HPAI H5N8 emergence in Europe, with antibody incidence declining after the 2014/15 winter. Our results indicate that the HPAI H5N8 virus has not continued to circulate extensively in wild bird populations since the 2014/15 winter and that independent maintenance of the virus in these populations appears unlikely.