Information received on 02/12/2020 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 Immediate notification
Date of start of the event 23/11/2020
Date of confirmation of the event 27/11/2020
Report date 01/12/2020
Date submitted to OIE 02/12/2020
Reason for notification First occurrence of a listed disease
Manifestation of disease Clinical disease
Causal agent Highly pathogenic influenza A virus
Serotype H5
Nature of diagnosis Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
New outbreaks (1)
Outbreak 1 (SAGIR 131995) RIANTEC, RIANTEC, Morbihan
Date of start of the outbreak 23/11/2020
Outbreak status Resolved (23/11/2020)
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 A Brent goose (Branta bernicla) was found dead following passive surveillance in wildlife carried out by the SAGIR network (French Biodiversity Office and National Hunters´ Federation). The municipality is located in a wetland area considered as being at particular risk with regard to avian influenza linked to migration corridors.
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
Animals in transit
Contact with wild species
Epidemiological comments The first-line diagnosis limited to the M protein was confirmed by the national reference laboratory by a rapid, unofficial method and then by a sequencing method. Neuraminidase could not be identified due to the low viral load. Sequencing analyses carried out by the national reference laboratory on 1st 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.
Control measures
Measures applied
Surveillance within containment and/or protection zone
Zoning
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-Plouzanet-Niort Laboratory, Ploufragan site (National laboratory) Brent Goose gene sequencing 01/12/2020 Positive
Anses - Ploufragan-Plouzanet-Niort Laboratory, Ploufragan site (National laboratory) Brent Goose real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 27/11/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.