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 , Agriculture, Nature and Food Quality, Ministry of Agriculture, Nature and Food Quality, 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
Date event resolved 05/04/2018
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)
Follow-up report No. 3 (27/02/2018)
Follow-up report No. 4 (23/03/2018)
Follow-up report No. 5 (04/04/2018)
New outbreaks (3)
Outbreak 1 (HPAI WB H5N6 2017-04) Elburg, Gelderland
Date of start of the outbreak 18/12/2017
Outbreak status Resolved (05/04/2018)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Mute Swan:Cygnus olor(Anatidae) 4 4 0 0
Outbreak 2 (HPAI WB H5N6 2017-05) De Kreupel, Noord-Holland
Date of start of the outbreak 21/12/2017
Outbreak status Resolved (05/04/2018)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Great black-backed Gull:Larus marinus(Laridae) 1 1 0 0
Black-headed Gull:Larus ridibundus(Laridae) 1 1 0 0
Outbreak 3 (HPAI CB H5N6 2018-01) Rhoon, Zuid-Holland
Date of start of the outbreak 20/01/2018
Outbreak status Resolved (05/04/2018)
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 0 0
Great black-backed Gull:Larus marinus(Laridae) 1 1 0 0
Black-headed Gull:Larus ridibundus(Laridae) 1 1 0 0
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.
Map of outbreak locations