Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
Netherlands
Information received on 07/11/2020 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 Immediate notification
Date of start of the event 16/10/2020
Date of confirmation of the event 27/10/2020
Report date 07/11/2020
Date submitted to OIE 07/11/2020
Reason for notification New strain of a listed disease in the country
Causal agent Highly pathogenic influenza A virus
Serotype H5N1
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
New outbreaks (4)
Outbreak 1 Hippolytishoef, Noord-Holland
Date of start of the outbreak 16/10/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Eurasian Wigeon:Anas penelope(Anatidae) 4 0 0 0
Affected population On October 16th living anas penelope (eurasian wigeon) were sampled in a duck decoy for scientific research, four (4) of the anas penelope (eurasian wigeon) were tested positive for H5N1 on 27 October at a National Reference Laboratory.
Outbreak 2 Purmerend, Noord-Holland
Date of start of the outbreak 28/10/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Greylag Goose:Anser anser(Anatidae) 1 1 0 0
Affected population A wild bird was found dead in a wetland.
Outbreak 3 Hallum, Friesland
Date of start of the outbreak 31/10/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Charadriidae (unidentified):Charadriidae (incognita)(Charadriidae) 1 1 0 0
Affected population On October 31st, one (1) numenius arquata (curlew) was found dead in a wetland area. On November 5th the National Reference Laboratory confirmed HPAI Virus H5N1 in the sample from the numenius arquata (curlew).
Outbreak 4 Holwerd, Friesland
Date of start of the outbreak 02/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Common Teal:Anas crecca(Anatidae) 1 1 0 0
Affected population On November 2nd, one (1) anas crecca (teal) was found dead in a wetland Area. On November 5th the National Reference Laboratory confirmed HPAI Virus H5N1 in the sample from the one (1) anas crecca (teal).
Summary of outbreaks Total outbreaks: 4
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Eurasian Wigeon:Anas penelope(Anatidae) 4 0 0 0
Greylag Goose:Anser anser(Anatidae) 1 1 0 0
Charadriidae (unidentified):Charadriidae (incognita)(Charadriidae) 1 1 0 0
Common Teal:Anas crecca(Anatidae) 1 1 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Eurasian Wigeon:Anas penelope(Anatidae) ** ** 0.00% **
Greylag Goose:Anser anser(Anatidae) ** ** 100.00% **
Charadriidae (unidentified):Charadriidae (incognita)(Charadriidae) ** ** 100.00% **
Common Teal:Anas crecca(Anatidae) ** ** 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 The haemagglutinin (HA) is nearly identical to the HA of the H5N8 wild bird isolates reported in 2020. The other genes are of LPAI origin.
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) Common Teal polymerase chain reaction (PCR) 05/11/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations