OIE: Highly pathogenic influenza A viruses (infection with H5N8) (non-poultry including wild birds), 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. 3
Date of start of the event 23/11/2020
Date of confirmation of the event 27/11/2020
Report date 14/12/2020
Date submitted to OIE 14/12/2020
Reason for notification First occurrence of a listed disease
Manifestation of disease Clinical disease
Causal agent Highly pathogenic influenza A virus
Serotype H5N8
Nature of diagnosis Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
Related reports Immediate notification (01/12/2020)
Follow-up report No. 1 (07/12/2020)
Follow-up report No. 2 (09/12/2020)
Follow-up report No. 3 (14/12/2020)
New outbreaks (1)
Outbreak 1 (SAGIR 131982) ST ARMEL, ST ARMEL, Morbihan
Date of start of the outbreak 30/11/2020
Outbreak status Resolved (30/11/2020)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Brent Goose:Branta bernicla(Anatidae) 1 1 0 0
Affected population One Brent goose was found sick on the riverbank and taken to a veterinary practitioner. Then the carcass of the bird has been taken by the SAGIR network (French Biodiversity Office and National Hunters´ Federation). The commune is in a wetland area, defined as being at particular risk with regard to avian influenza in connection with migration corridors. The first-line diagnosis limited to the M protein was confirmed by the national reference laboratory using a rapid, unofficial method, followed by a sequencing method. Sequencing analyses conducted by the national reference laboratory on 13 December 2020 show that the virus is closely related to the sequences of the highly pathogenic H5 clade 2.3.4.4b viruses circulating in recent weeks in Russia, Northern Europe, and France.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Brent Goose:Branta bernicla(Anatidae) 1 1 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Brent Goose:Branta bernicla(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
Contact with wild species
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
Ploufragan-Plouzané-Niort Laboratory, Ploufragan site, ANSES (National laboratory) Brent Goose real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 12/12/2020 Positive
Ploufragan-Plouzané-Niort Laboratory, Ploufragan site, ANSES (National laboratory) Brent Goose virus sequencing 13/12/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.