Highly pathogenic avian influenza,
Information received on 08/12/2020 from Dr Loic Evain, Directeur Général adjoint, CVO, Direction générale de l'alimentation, Ministère de l'Agriculture et de l'Alimentation, Paris, France
Report type Follow-up report No. 2
Date of start of the event 07/11/2020
Date of confirmation of the event 16/11/2020
Report date 07/12/2020
Date submitted to OIE 08/12/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 27/10/2017
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (16/11/2020)
Follow-up report No. 1 (23/11/2020)
Follow-up report No. 2 (07/12/2020)
Follow-up report No. 3 (10/12/2020)
Follow-up report No. 4 (14/12/2020)
Follow-up report No. 5 (18/12/2020)
Follow-up report No. 6 (22/12/2020)
Follow-up report No. 7 (24/12/2020)
Follow-up report No. 8 (31/12/2020)
Follow-up report No. 9 (06/01/2021)
Follow-up report No. 10 (08/01/2021)
Follow-up report No. 11 (15/01/2021)
New outbreaks (1)
Outbreak 1 (IA-2020-0484) BENESSE-MAREMNE, BENESSE-MAREMNE, Landes
Date of start of the outbreak 05/12/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 6000 400 400 5600 0
Affected population Ducks, in pre-feeding phase in the open air, showed a sharp increase in mortality. The first-line diagnosis carried out by the departmental laboratory revealed an H5 virus by PCR. Stamping-out took place without waiting for confirmation by the national reference laboratory. The upstream/downstream epidemiological investigation is continuing. The commune is located in a wetland area, overflown by migratory birds.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 6000 400 400 5600 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 6.67% 6.67% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments The upstream epidemiological investigation is continuing at the supplier of the birds, which is common to all three pet shops. All backyard premises are secondary outbreaks of the pet shops. H5N8 virus clade is
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance within containment and/or protection zone
  • Traceability
  • Stamping out
  • Zoning
  • Disinfection
  • 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
Anses - Ploufragan-Plouzané-Niort laboratory, Ploufragan site (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 06/12/2020 Positive
Anses - Ploufragan-Plouzané-Niort laboratory, Ploufragan site (National laboratory) Birds virus sequencing 07/12/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations