Sweden - 2 new outbreaks of highly pathogenic avian influenza H5N8 in wild birds (OIE, December 6, 2016)

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Highly pathogenic avian influenza, Sweden

Information received on 06/12/2016 from Dr Ingrid Eilertz, Chief Veterinary Officer Director and Head, Swedish Board of Agriculture Department for Animal Welfare and Health, Ministry for Rural Affairs, J?nk?ping, Sweden

Summary Report type Follow-up report No. 1 Date of start of the event 14/11/2016 Date of confirmation of the event 23/11/2016 Report date 06/12/2016 Date submitted to OIE 06/12/2016 Reason for notification Reoccurrence of a listed disease Date of previous occurrence 05/03/2015 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N8 Nature of diagnosis Laboratory (advanced) This event pertains to a defined zone within the country Related reports Immediate notification (23/11/2016) Follow-up report No. 1 (06/12/2016)

New outbreaks (2)

Outbreak 1 Gotland, N?s, Gotland, GOTLANDS L?N Date of start of the outbreak 25/11/2016 Outbreak status Resolved (25/11/2016) Epidemiological unit Not applicable Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Accipitridae (unidentified):Accipitridae (incognita)(Accipitridae) 1 0 1 0 Affected population This wild eagle was found alive with neurological symptoms.

Outbreak 2 Malm?, Malm?, Malm?, SK?NE L?N Date of start of the outbreak 25/11/2016 Outbreak status Resolved (25/11/2016) Epidemiological unit Not applicable Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Black-headed Gull:Larus ridibundus(Laridae) 2 2 0 Hooded Crow:Corvus cornix(Corvidae) 1 1 0

Summary of outbreaks Total outbreaks: 2 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Accipitridae (unidentified):Accipitridae (incognita)(Accipitridae) 1 0 1 0 Black-headed Gull:Larus ridibundus(Laridae) 2 2 0 Hooded Crow:Corvus cornix(Corvidae) 1 1 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Accipitridae (unidentified):Accipitridae (incognita)(Accipitridae) ** ** 0.00% ** Black-headed Gull:Larus ridibundus(Laridae) ** ** ** ** Hooded Crow:Corvus cornix(Corvidae) ** ** ** ** *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 These birds were found sick or dead and were sent to the National Veterinary Institute for analysis as part of the routine surveillance of avian influenza. Weekly follow-up-reports on wild birds will only be sent if new cases are detected.

Control measures Measures applied Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone 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 National Veterinary Institute (National laboratory) Accipitridae (unidentified) real-time PCR 02/12/2016 Positive National Veterinary Institute (National laboratory) Accipitridae (unidentified) virus sequencing 05/12/2016 Positive National Veterinary Institute (National laboratory) Black-headed Gull real-time PCR 02/12/2016 Positive National Veterinary Institute (National laboratory) Black-headed Gull virus sequencing 05/12/2016 Positive National Veterinary Institute (National laboratory) Hooded Crow real-time PCR 02/12/2016 Positive National Veterinary Institute (National laboratory) Hooded Crow virus sequencing 05/12/2016 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=21816