Highly pathogenic avian influenza,
France
Information received on 14/12/2020 from Dr Loic Evain, Directeur Général adjoint, CVO, Direction générale de l'alimentation, Ministère de l'Agriculture et de l'Alimentation, Paris, France
Summary
Report type Follow-up report No. 4
Date of start of the event 07/11/2020
Date of confirmation of the event 16/11/2020
Report date 14/12/2020
Date submitted to OIE 14/12/2020
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)
New outbreaks (3)
Outbreak 1 (IA-2020-0519) ST SAUVEUR, ST SAUVEUR, Deux-Sèvres
Date of start of the outbreak 10/12/2020
Outbreak status Resolved (08/01/2021)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 3700 120 120 3580 0
Affected population Future breeding Muscovy ducks (3,100 males and 600 females in two separate buildings) showed clinical signs on 10/12/2020 with increasing mortality. Analyses revealed an HPAI H5N8 virus, clade 2.3.4.4.b, confirmed by the national reference laboratory. The epidemiological investigation is currently under way.
Outbreak 2 (IA-2020-0517) ST MAURICE des NOUES, ST MAURICE des NOUES, Vendée
Date of start of the outbreak 10/12/2020
Outbreak status Resolved (15/01/2021)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 7000 700 700 6300 0
Affected population Breeding of lean ducks in buildings with increased mortality. Analyses conducted by the national reference laboratory revealed an HPAI H5N8 virus, clade 2.3.4.4.b. The epidemiological investigation is currently under way.
Outbreak 3 (IA-2020-0514) ANGRESSE, ANGRESSE, Landes
Date of start of the outbreak 11/12/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 3597 147 0 3597 0
Affected population Domestic poultry farm (various galliform species and fattened ducks) located in the protection zone of the outbreak IA-2020-0484. Scheduled surveillance in the restricted zone revealed an HPAI H5N8 virus of clade 2.3.4.4.b, confirmed by the reference laboratory. The town is located in a wetland area, considered to be at particular risk as regards wild fauna avian influenza.
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 14297 967 820 13477 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 6.76% 5.74% 84.80% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
  • Fomites (humans, vehicles, feed, etc.)
  • Contact with wild species
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
Ploufragan-Plouzané-Niort Laboratory, Ploufragan site, ANSES (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 12/12/2020 Positive
Ploufragan-Plouzané-Niort Laboratory, Ploufragan site, ANSES (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 13/12/2020 Positive
Ploufragan-Plouzané-Niort Laboratory, Ploufragan site, ANSES (National laboratory) Birds virus sequencing 13/12/2020 Positive
Ploufragan-Plouzané-Niort Laboratory, Ploufragan site, ANSES (National laboratory) Birds virus sequencing 14/12/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations