Netherlands - Bird Flu H5N6 in backyard flock near Rotterdam

[Gert van der Hoek]

Rotterdam - Bird flu H5N6 at hobby holder Rhoon


Jan 22, 2018


In animals belonging to a hobby holder in Rhoon, South Holland, highly pathogenic avian flu of the H5N6 type has been identified, the Poultry Association of LTO / NOP said Monday.

LTO / NOP renews its call for vigilance in the poultry sector. The new infection shows that the virus is still around, says LTO / NOP. "Vigilance and hygiene is required," emphasizes the representative. The hobby holder had various types of poultry. They are being culled.

No additional restrictive measures

Because it is not a commercial farm, no additional restrictive measures are introduced, such as restriction zones. The hobby holder is also in a poultry-poor area. National measures such as the obligation to keep poultry inside, the ban on visitors / hygiene requirements, the ban on exhibitions for hobby birds and the litter protocol for duck farms have been in force since December.

[Pathfinder]

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

Information received on 24/01/2018 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. 2 Date of start of the event 09/12/2017 Date of confirmation of the event 13/12/2017 Report date 24/01/2018 Date submitted to OIE 24/01/2018 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 a defined zone within the country Related reports Immediate notification (15/12/2017) Follow-up report No. 1 (22/12/2017) Follow-up report No. 2 (24/01/2018)

New outbreaks (3)

Outbreak 1 (HPAI WB H5N6 2017-04) Elburg, GELDERLAND Date of start of the outbreak 18/12/2017 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) 4 4

Outbreak 2 (HPAI WB H5N6 2017-05) De Kreupel, NOORD-HOLLAND Date of start of the outbreak 21/12/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Great black-backed Gull:Larus marinus(Laridae) 1 1 Black-headed Gull:Larus ridibundus(Laridae) 1 1

Outbreak 3 (HPAI CB H5N6 2018-01) Rhoon, ZUID-HOLLAND Date of start of the outbreak 20/01/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 32 2 0 32 0 Affected population Mixed species of non-poultry birds

Summary of outbreaks Total outbreaks: 3 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Mute Swan:Cygnus olor(Anatidae) 4 4 Great black-backed Gull:Larus marinus(Laridae) 1 1 Black-headed Gull:Larus ridibundus(Laridae) 1 1 Birds 32 2 0 32 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% ** Great black-backed Gull:Larus marinus(Laridae) ** ** 100.00% ** Black-headed Gull:Larus ridibundus(Laridae) ** ** 100.00% ** Birds 6.25% 0.00% 0.00% 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 Erasmus University (Local laboratory) Black-headed Gull polymerase chain reaction (PCR) 23/12/2017 Positive Erasmus University (Local laboratory) Great black-backed Gull polymerase chain reaction (PCR) 23/12/2017 Positive Wageningen Bioveterinary Research, Lelystad (National laboratory) Birds polymerase chain reaction (PCR) 22/01/2018 Positive Wageningen Bioveterinary Research, Lelystad (National laboratory) Greylag Goose polymerase chain reaction (PCR) 22/12/2017 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=25786