Netherlands - 2 new outbreaks of highly pathogenic avian influenza H5N6 in wild birds in villages, Zeeland, Groningen (OIE, March 23, 2018)

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Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds), Netherlands

Information received on 23/03/2018 from Dr Christianne Bruschke, Chief Veterinary Officer , Ministry of Economic Affairs, Ministry of Economic Affairs, The Hague, Netherlands

Summary Report type Follow-up report No. 4 Date of start of the event 09/12/2017 Date of confirmation of the event 13/12/2017 Report date 23/03/2018 Date submitted to OIE 23/03/2018 Reason for notification Recurrence of a listed disease Date of previous occurrence 16/05/2017 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N6 Nature of diagnosis Clinical, Laboratory (advanced) This event pertains to the whole country Related reports Immediate notification (15/12/2017) Follow-up report No. 1 (22/12/2017) Follow-up report No. 2 (24/01/2018) Follow-up report No. 3 (27/02/2018) Follow-up report No. 4 (23/03/2018)

New outbreaks (2)

Outbreak 1 (HPAI WB H5N6 2018-03) Stavenisse, Zeeland Date of start of the outbreak 25/02/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Eurasian buzzard (common buzzard):Buteo buteo(Accipitridae) 1 1 0 0

Outbreak 2 (HPAI WB H5N6 2018-04) Westernieland, Groningen Date of start of the outbreak 28/02/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Peregrin falcon:Falco peregrinus(Falconidae) 1 1 0 0

Summary of outbreaks Total outbreaks: 2 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Eurasian buzzard (common buzzard):Buteo buteo(Accipitridae) 1 1 0 0 Peregrin falcon:Falco peregrinus(Falconidae) 1 1 0 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Eurasian buzzard (common buzzard):Buteo buteo(Accipitridae) ** ** 100.00% ** Peregrin falcon:Falco peregrinus(Falconidae) ** ** 100.00% ** *Removed from the susceptible population through death, destruction and/or slaughter **Not calculated because of missing information

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive Epidemiological comments This H5N6 subtype is a reassortment linked to H5N8 and not the Asian zoonotic H5N6

Control measures Measures applied Vaccination prohibited No treatment of affected animals Measures to be applied No other measures

Diagnostic test results Laboratory name and type Species Test Test date Result Wageningen Bioveterinary Research, Lelystad (National laboratory) Eurasian buzzard (common buzzard) polymerase chain reaction (PCR) 16/03/2018 Positive Wageningen Bioveterinary Research, Lelystad (National laboratory) Peregrin falcon polymerase chain reaction (PCR) 16/03/2018 Positive

Future Reporting The event is continuing. Weekly follow-up reports will be submitted.

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http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=26270