7th bird flu case at Kumamoto farm

[Treyfish]

7th bird flu case at Kumamoto farm

3:02 am, December 28, 2016

Jiji Press KUMAMOTO (Jiji Press) ? An outbreak of highly pathogenic H5 avian influenza has been confirmed at a poultry farm in Nankan in Kumamoto Prefecture, the prefectural government said Tuesday.
Authorities will cull about 107,000 chickens raised at the farm. This is the seventh bird flu case at a Japanese farm this winter, following the six cases in Niigata, Aomori, Hokkaido and Miyazaki prefectures.
About 50 chickens were found dead at the Nankan farm Monday afternoon, according to Kumamoto officials. Genetic tests were conducted after simple tests found five dead chickens positive for bird flu.
Transfers of chickens and eggs are restricted in areas near the farm. Vehicle disinfection measures have been introduced on main roads leading to the facility.
If it is judged that the flu will not spread, the restrictions on chicken and egg transfers will be lifted in an area 3-10 kilometers from the farm as early as 10 days after the culling and the disinfection at the farm.
The restrictions covering the 3-kilometer radius from the farm will be removed 11 days later at the earliest.
The agriculture ministry and other sources said there has been no report of human bird flu infection through the consumption of poultry meat or eggs in Japan.http://the-japan-news.com/news/article/0003428243

[Pathfinder]

Highly pathogenic avian influenza, Japan

Information received on 28/12/2016 from Dr Kazuo Ito, Director, International Animal Health Affairs Office, Animal Health Division, Food Safety and Consumer Affairs Bureau, Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan

Summary Report type Follow-up report No. 3 Date of start of the event 28/11/2016 Date of confirmation of the event 28/11/2016 Report date 26/12/2016 Date submitted to OIE 28/12/2016 Reason for notification Reoccurrence of a listed disease Date of previous occurrence 17/02/2015 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N6 Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced) This event pertains to the whole country Related reports Immediate notification (29/11/2016) Follow-up report No. 1 (05/12/2016) Follow-up report No. 2 (19/12/2016) Follow-up report No. 3 (26/12/2016)

New outbreaks (1)

Outbreak 1 Nankan-machi, KUMAMOTO Date of start of the outbreak 26/12/2016 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 107000 50 50 0 Affected population Poultry (layers)

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Birds 107000 50 50 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 0.05% 0.05% 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 Epidemiological comments Outbreak 1 (Aomori), 2 (Niigata, Sekikawa-mura) and 4 (Aomori, 2nd case) ?follow up information of the previous reports On 27 December 2016, the movement restriction was lifted since 21 days had passed without any new outbreaks after control measures including stamping out had been completed on 5 December 2016. Outbreak 3 (Niigata, Joetsu-shi) ?follow up information of the previous reports On 28 December 2016, the movement restriction was lifted since 21 days had passed without any new outbreaks after control measures including stamping out had been completed on 6 December 2016. Outbreak 5 (Hokkaido, Shimizu-cho) ? follow up information of the previous reports On 20 November 2016, the N-type was identified as N6 by NIAH. On 24 December 2016, control measures including disinfection of the affected premises were completed. Outbreak 6 (Miyazaki, Kawaminami-cho) ? follow up information of the previous reports On 21 December 2016, control measures including disinfection of the affected premises were completed. On 22 November 2016, the N-type was identified as N6 by NIAH. Outbreak 7 (Kumamoto) ? this report On 26 December 2016, the local veterinary service in Kumamoto Prefecture received a notification from a domestic hen farm on an increase in the number of dead birds (50 birds on the same day). The samples were sent to the laboratory of local veterinary service (Kumamoto Livestock Hygiene Service Centre) and the samples from dead birds were confirmed to be influenza A virus positive by antigen-capture kits and to be subtype H5 by RT-PCR and RRT-PCR in Kumamoto Livestock Hygiene Service Centre. Destruction of all the susceptible birds in the affected farm is being implemented. Movement restriction is imposed on the farms within a radius of 3km of the affected farm. Shipment restriction is imposed on the farms within a radius of 3-10kmof the affected farm. The N-type has not yet been identified.

Control measures Measures applied Movement control inside the country Screening Disinfection / Disinfestation Quarantine Stamping out 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 Kumamoto Livestock Hygiene Service Centre (Local laboratory) Birds rapid tests 26/12/2016 Positive Kumamoto Livestock Hygiene Service Centre (Local laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 27/12/2016 Positive Kumamoto Livestock Hygiene Service Centre (Local laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 27/12/2016 Positive the National Institute of Animal Health (National laboratory) Birds gene sequencing 22/12/2016 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=22064