France - 1 new outbreak of low pathogenic avian influenza H7N7 in a breeding farm with mallard ducks, Arthies, Val-D'Oise (OIE, July 9, 2018)

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Low pathogenic avian influenza (poultry), France

Information received on 09/07/2018 from Dr Loic Evain, Directeur G?n?ral adjoint, CVO, Direction g?n?rale de l'alimentation, Minist?re de l'Agriculture et de l'Alimentation, Paris, France

Summary Report type Immediate notification Date of start of the event 06/06/2018 Date of confirmation of the event 11/06/2018 Report date 09/07/2018 Date submitted to OIE 09/07/2018 Reason for notification Recurrence of a listed disease Date of previous occurrence 25/01/2017 Manifestation of disease Sub-clinical infection Causal agent Low pathogenic avian influenza virus Serotype H7N7 Nature of diagnosis Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (1)

Outbreak 1 (H7N7-1) Arthies, Arthies, Val-D'Oise Date of start of the outbreak 06/06/2018 Outbreak status Resolved (05/07/2018) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 10000 0 0 0 Affected population Samples taken in a farm with mallard ducks, in the framework of the planned surveillance. The national reference laboratory confirmed the presence of low pathogenic H7N7 virus on 08/06/2018 in ducklings born this year. The animals were put under containment and a new series of assays showed the absence of viral excretion on 05/07/2018.

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 10000 ** 0 0 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds ** 0.00% ** 0.00% *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 Unknown or inconclusive Epidemiological comments A breeding farm with mallard ducks was tested, in the framework of the national surveillance of avian influenza. The batch of ducklings was confirmed positive to low pathogenic H7N7 virus. The animals did not show any symptoms. They were put under containment and new assays performed three weeks later showed the absence of viral excretion. Once the batch is dispatched, the breeding facilities will be subjected to cleaning and disinfection, then to fallowing, as per the legislation.

Control measures Measures applied Surveillance within containment and/or protection zone Screening 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 Labocea, Ploufragan (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 05/07/2018 Negative National Reference Laboratory, Ploufragan (National laboratory) Birds nucleotide sequencing 11/06/2018 Positive National Reference Laboratory, Ploufragan (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 11/06/2018 Positive

Future Reporting The event is continuing. Weekly follow-up reports will be submitted.

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http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=26874