China - 2 new outbreaks of highly pathogenic avian influenza H5N1 in birds in Tibet and Inner Mongolia (OIE, Juiy 22, 2015)

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Highly pathogenic avian influenza, China (People's Rep. of)

Information received on 22/07/2015 from Dr Zhang Zhongqui, Director General , China Animal Disease Control Centre, Veterinary Bureau, Ministry of Agriculture, Beijing, China (People's Rep. of)

Summary Report type Follow-up report No. 6 Date of start of the event 12/09/2014 Date of confirmation of the event 15/09/2014 Report date 22/07/2015 Date submitted to OIE 22/07/2015 Reason for notification Reoccurrence of a listed disease Date of previous occurrence 01/05/2014 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N1 Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced) This event pertains to a defined zone within the country Related reports Immediate notification (24/10/2014) Follow-up report No. 1 (09/01/2015) Follow-up report No. 2 (16/01/2015) Follow-up report No. 3 (01/04/2015) Follow-up report No. 4 (19/06/2015) Follow-up report No. 5 (17/07/2015) Follow-up report No. 6 (22/07/2015)

New outbreaks (2)

Outbreak 1 Galongcuo bird island, Anduo, Naqu, TIBET Date of start of the outbreak 11/05/2015 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Not applicable Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Bar-headed Goose:Anser indicus(Anatidae) 415 0 0 Affected population There were 415 wild birds dead, including brown-headed gulls and bar-headed geese.

Outbreak 2 Shuangheer wetland, Kezuohouqi, Tongliao, INNER MONGOLIA Date of start of the outbreak 11/05/2015 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Natural park Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Black-necked Grebe:Podiceps nigricollis(Podicipedidae) 300 0 0

Summary of outbreaks Total outbreaks: 2 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Bar-headed Goose:Anser indicus(Anatidae) ** 415 0 0 Black-necked Grebe:Podiceps nigricollis(Podicipedidae) ** 300 0 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Bar-headed Goose:Anser indicus(Anatidae) ** ** ** ** Black-necked Grebe:Podiceps nigricollis(Podicipedidae) ** ** ** ** *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 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 Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (OIE?s Reference Laboratory) Bar-headed Goose reverse transcription - polymerase chain reaction (RT-PCR) 29/05/2015 Positive Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (OIE?s Reference Laboratory) Bar-headed Goose virus isolation 29/05/2015 Positive Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (OIE?s Reference Laboratory) Black-necked Grebe reverse transcription - polymerase chain reaction (RT-PCR) 29/05/2015 Positive Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (OIE?s Reference Laboratory) Black-necked Grebe virus isolation 29/05/2015 Positive

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

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