Netherlands - HP H5N6 bird flu in small animal park in Biddinghuizen, 40 birds culled

[Gert van der Hoek]

Biddinghuizen December 18, 2017

Bird flu has been detected ain the Scharrelberg animal park in Biddinghuizen. All ducks, chickens, geese, swans and peacocks in the park were culled Sunday evening. According to chairman Henk Aernaudts of the Scharrelberg, about 40 birds are affected.

A few dead chickens were found Friday at the Scharrelberg. A veterinarian was called and after that the Dutch Food and Product Authority was called. He found that there is indeed bird flu. It is still being investigated whether this is the same variant as in a duck farm in Biddinghuizen earlier this month.

The coops of the animals in the Scharrelberg must be disinfected several times in the coming period.


Note: dec 8 bird flu H5N6 was detected in a duck farm in Biddinghuizen.

[Pathfinder]

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

Information received on 22/12/2017 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. 1 Date of start of the event 09/12/2017 Date of confirmation of the event 13/12/2017 Report date 22/12/2017 Date submitted to OIE 22/12/2017 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 a defined zone within the country Related reports Immediate notification (15/12/2017) Follow-up report No. 1 (22/12/2017)

New outbreaks (2)

Outbreak 1 (HPAI WB H5N6 2017-03) Harderwijk, GELDERLAND Date of start of the outbreak 14/12/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Mute Swan:Cygnus olor(Anatidae) 1 1 0 0

Outbreak 2 (HPAI CB H5N6 2017-01) Biddinghuizen, FLEVOLAND Date of start of the outbreak 15/12/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Mallard:Anas platyrhynchos(Anatidae) 15 15 2 13 0 Greylag Goose:Anser anser(Anatidae) 5 5 0 5 0 Indian Peafowl:Pavo cristatus(Phasianidae) 8 5 1 7 0 Numididae (unidentified):Numididae (incognita)(Numididae) 30 24 12 18 0

Summary of outbreaks Total outbreaks: 2 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Mute Swan:Cygnus olor(Anatidae) 1 1 0 0 Mallard:Anas platyrhynchos(Anatidae) 15 15 2 13 0 Greylag Goose:Anser anser(Anatidae) 5 5 0 5 0 Indian Peafowl:Pavo cristatus(Phasianidae) 8 5 1 7 0 Numididae (unidentified):Numididae (incognita)(Numididae) 30 24 12 18 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Mute Swan:Cygnus olor(Anatidae) ** ** 100.00% ** Mallard:Anas platyrhynchos(Anatidae) 100.00% 13.33% 13.33% 100.00% Greylag Goose:Anser anser(Anatidae) 100.00% 0.00% 0.00% 100.00% Indian Peafowl:Pavo cristatus(Phasianidae) 62.50% 12.50% 20.00% 100.00% Numididae (unidentified):Numididae (incognita)(Numididae) 80.00% 40.00% 50.00% 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 permitted (if a vaccine exists) 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) Greylag Goose polymerase chain reaction (PCR) 21/12/2017 Positive Wageningen Bioveterinary Research, Lelystad (National laboratory) Indian Peafowl polymerase chain reaction (PCR) 21/12/2017 Positive Wageningen Bioveterinary Research, Lelystad (National laboratory) Mallard polymerase chain reaction (PCR) 20/12/2017 Positive Wageningen Bioveterinary Research, Lelystad (National laboratory) Mute Swan polymerase chain reaction (PCR) 19/12/2017 Positive Wageningen Bioveterinary Research, Lelystad (National laboratory) Numididae (unidentified) polymerase chain reaction (PCR) 21/12/2017 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=25489