Low pathogenic avian influenza (poultry),
Information received on 01/06/2013 from Dr Per Starcke Henriksen, Chief Veterinary Officer, Danish Veterinary and Food Administration, Ministry of Environment and Food of Denmark, Glostrup, Denmark
Report type Immediate notification
Date of start of the event 31/05/2013
Date of confirmation of the event 31/05/2013
Report date 01/06/2013
Date submitted to OIE 01/06/2013
Date event resolved 27/06/2013
Reason for notification Recurrence of a listed disease
Date of previous occurrence 03/2010
Manifestation of disease Sub-clinical infection
Causal agent low pathogenicity avian influenza virus
Serotype H7
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (01/06/2013)
Follow-up report No. 1 (19/06/2013)
Follow-up report No. 2 (03/09/2013)
New outbreaks (1)
Outbreak 1 Viborg, Viborg, West
Date of start of the outbreak 31/05/2013
Outbreak status Resolved (27/06/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 22215 5118 0
Affected population The farm breeds game birds (mallards and pheasants) for hunting purposes.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 22215 ** 5118 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** ** ** **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments On 31 May 2013, low pathogenic avian influenza (LPAI) H7 was detected in mallards in samples collected in connection with the Danish surveillance programme for avian influenza. The stamping-out of the mallards at the infected holding will be initiated as soon as possible. The mallards and the pheasants are kept epidemiologically separated and LPAI H7 has only been detected in the mallards. The Danish Veterinary and Food Administration has established a restricted zone at 1 km around the holding and are implementing the necessary measures in accordance with Council Directive 2005/94/EC. Note by the OIE Animal Health Information Department: H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2012).
Control measures
Measures applied
  • Movement control inside the country
  • Zoning
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Disinfection / Disinfestation
  • Modified stamping out
Diagnostic test results
Laboratory name and type Species Test Test date Result
National Veterinary Institute (National laboratory) Birds polymerase chain reaction (PCR) 31/05/2013 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations