Switzerland - 1 new outbreak of highly pathogenic avian influenza H5N8 in a gull in Zurich (OIE, December 21, 2016

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Highly pathogenic avian influenza, Switzerland

Information received on 21/12/2016 from Mr Hans Wyss, Chief Veterinary Officer, Schwarzenburgstrasse 161, Swiss Federal Veterinary Office, LIEBEFELD BERNE, Switzerland

Summary Report type Follow-up report No. 6 Date of start of the event 05/11/2016 Date of confirmation of the event 09/11/2016 Report date 21/12/2016 Date submitted to OIE 21/12/2016 Reason for notification Reoccurrence of a listed disease Date of previous occurrence 02/2008 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N8 Nature of diagnosis Laboratory (basic), Laboratory (advanced), Necropsy This event pertains to a defined zone within the country Related reports Immediate notification (10/11/2016) Follow-up report No. 1 (16/11/2016) Follow-up report No. 2 (22/11/2016) Follow-up report No. 3 (29/11/2016) Follow-up report No. 4 (07/12/2016) Follow-up report No. 5 (14/12/2016) Follow-up report No. 6 (21/12/2016)

New outbreaks (1)

Outbreak 1 (HPAI_2016_1) Z?richsee, Z?rich, Z?rich, ZURICH Date of start of the outbreak 19/12/2016 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Not applicable Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Black-headed Gull:Larus ridibundus(Laridae) 1 1 0 0

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Black-headed Gull:Larus ridibundus(Laridae) 1 1 0 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Black-headed Gull:Larus ridibundus(Laridae) ** ** 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 Unknown or inconclusive

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 National Reference Centre for Diseases of Poultry and Rabbits (NRGK) (National laboratory) Black-headed Gull reverse transcription - polymerase chain reaction (RT-PCR) 19/12/2016 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=22006