China - 1 new outbreak of highly pathogenic avian influenza H5N1 in birds in farm, Qinghai province (OIE, June 26, 2018)

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

Information received on 26/06/2018 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 Immediate notification Date of start of the event 12/06/2018 Date of confirmation of the event 21/06/2018 Report date 26/06/2018 Date submitted to OIE 26/06/2018 Reason for notification Recurrence of a listed disease Date of previous occurrence 10/10/2017 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

New outbreaks (1)

Outbreak 1 Haixi Mongolian and Tibetan Autonomous Prefecture, Dachaidan District, Qinghai Date of start of the outbreak 12/06/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1615 1050 1050 565 0 Affected population Infected poultry were broiler chickens.

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1615 1050 1050 565 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 65.02% 65.02% 100.00% 100.00% *Removed from the susceptible population through death, destruction and/or slaughter

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive

Control measures Measures applied Movement control inside the country Screening Quarantine Official destruction of animal products Official disposal of carcasses, by-products and waste Stamping out Disinfection Vaccination permitted (if a vaccine exists) 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 National Avian Influenza Reference Laboratory (OIE Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 21/06/2018 Positive Harbin National Avian Influenza Reference Laboratory (OIE Reference Laboratory) Birds virus isolation 21/06/2018 Positive

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

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