Russia - 1 new outbreak of highly pathogenic avian influenza H5N8 in birds, Rostov Oblast (OIE, October 23, 2017)

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Highly pathogenic avian influenza, Russia

Information received on 23/10/2017 from Dr Evgeny Nepoklonov, Vice-minister, Ministry of Agriculture, Ministry of Agriculture, Moscow, Russia

Summary Report type Follow-up report No. 22 Date of start of the event 02/12/2016 Date of confirmation of the event 06/12/2016 Report date 23/10/2017 Date submitted to OIE 23/10/2017 Reason for notification Recurrence of a listed disease Date of previous occurrence 07/11/2016 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N8 Nature of diagnosis Laboratory (basic), Laboratory (advanced) This event pertains to a defined zone within the country Related reports Immediate notification (08/12/2016) Follow-up report No. 1 (16/12/2016) Follow-up report No. 2 (29/12/2016) Follow-up report No. 3 (16/01/2017) Follow-up report No. 4 (26/01/2017) Follow-up report No. 5 (28/02/2017) Follow-up report No. 6 (06/03/2017) Follow-up report No. 7 (15/03/2017) Follow-up report No. 8 (23/03/2017) Follow-up report No. 9 (14/04/2017) Follow-up report No. 10 (20/04/2017) Follow-up report No. 11 (27/04/2017) Follow-up report No. 12 (04/05/2017) Follow-up report No. 13 (12/05/2017) Follow-up report No. 14 (17/05/2017) Follow-up report No. 15 (22/05/2017) Follow-up report No. 16 (30/05/2017) Follow-up report No. 17 (07/06/2017) Follow-up report No. 18 (29/06/2017) Follow-up report No. 19 (03/08/2017) Follow-up report No. 20 (08/08/2017) Follow-up report No. 21 (13/10/2017) Follow-up report No. 22 (23/10/2017)

New outbreaks (1)

Outbreak 1 Chertkovskaya, Morozovsky, ROSTOVSKAYA OBLAST Date of start of the outbreak 20/10/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1919 27 27

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1919 27 27 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 1.41% 1.41% 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 The comparative analysis of the obtained nucleotide sequence of the H gene fragment revealed that the isolates belong to an Asian genetic lineage of highly pathogenic avian influenza (lineage A/Gs/Guangdong/96, Clade 2.3.4.4.). Based on the H gene fragment the avian influenza A virus (H5) sequences were isolated in several RF Subjects in 2016-2017. And the avian influenza A virus (H5) sequences were isolated in South-East Asia in 2013-2014, as well as in Europe and Iran in 2017.

Control measures Measures applied Movement control inside the country Disinfection / Disinfestation Screening Quarantine Official disposal of carcasses, by-products and waste Stamping out Surveillance within containment and/or protection zone Control of wildlife reservoirs 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 All-Russian Research Institute for Animal Health (FGBI-ARRIAH) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 20/10/2017 Positive

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

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