China: An outbreak of highly pathogenic avian influenza H7N9 in poultry in Hongdong County, Linfen City, Shanxi Province

[Miyamoto Masakazu]

Source (MoA):
http://www.syj.moa.gov.cn/dwybfk/201804/t20180404_6139672.htm

<<Mechanical. T.>>

China: An outbreak of H7N9 flu in poultry in Hongdong County, Linfen City, Shanxi Province

On March 27th, a breeder raised by a farmer in Hongdong County, Linyi City, Shanxi Province experienced suspected bird flu symptoms, with 812 cases and 699 deaths. On March 31st, the Shanxi Animal Disease Control and Prevention Center was diagnosed as suspected of the bird flu epidemic. On April 4, the national bird flu reference laboratory confirmed the epidemic was the H7N9 flu epidemic.
After the outbreak of the epidemic, the local authorities did a good job of handling the epidemic in accordance with relevant preplans and technical requirements for prevention and control, and culled and detoxified 6,374 poultry. At present, the epidemic has been effectively controlled.

[Pathfinder]

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

Information received on 05/04/2018 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 Follow-up report No. 1 Date of start of the event 17/02/2018 Date of confirmation of the event 05/03/2018 Report date 05/04/2018 Date submitted to OIE 05/04/2018 Reason for notification Recurrence of a listed disease Date of previous occurrence 25/08/2017 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H7N9 Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced) This event pertains to a defined zone within the country Related reports Immediate notification (05/03/2018) Follow-up report No. 1 (05/04/2018)

New outbreaks (1)

Outbreak 1 Linfen, Hongtong, Shanxi Date of start of the outbreak 27/03/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 6374 812 699 5675 0 Affected population Layers

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 6374 812 699 5675 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 12.74% 10.97% 86.08% 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 Surveillance outside containment and/or protection zone 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 virus isolation 04/04/2018 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=26385