Russia - 1 new outbreak of highly pathogenic avian influenza H5N1 in 4 wild birds found dead in the surroundings of Ubsu-Nur Lake (OIE, June 11, 2015)

[Pathfinder]

Highly pathogenic avian influenza, Russia

Information received on 11/06/2015 from Dr Evgeny Nepoklonov, Deputy Head, Federal Service for Veterinary and Phytosanitary Surveillance, Ministry of Agriculture, Moscow, Russia

Summary Report type Immediate notification Date of start of the event 28/05/2015 Date of confirmation of the event 09/06/2015 Report date 10/06/2015 Date submitted to OIE 11/06/2015 Reason for notification Reoccurrence of a listed disease Date of previous occurrence 27/04/2015 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N1 Nature of diagnosis Laboratory (basic), Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (1)

Outbreak 1 Ubsu-Nur, Ovyursky, RESPUBLIKA TYVA Date of start of the outbreak 28/05/2015 Outbreak status Resolved (10/06/2015) Epidemiological unit Not applicable Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Great Crested Grebe:Podiceps cristatus(Podicipedidae) 2 2 0 0 Common Tern:Sterna hirundo(Laridae) 2 2 0 0

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Great Crested Grebe:Podiceps cristatus(Podicipedidae) 2 2 0 0 Common Tern:Sterna hirundo(Laridae) 2 2 0 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Great Crested Grebe:Podiceps cristatus(Podicipedidae) ** ** 100.00% ** Common Tern:Sterna hirundo(Laridae) ** ** 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 Contact with wild species Epidemiological comments During the active monitoring of the ornithofauna in the surroundings of Ubsu-Nur Lake, a few wild birds were found dead. Highly pathogenic avian influenza (HPAI) virus H5N1 was detected and isolated in samples from carcasses of two great crested grebes and two common terns. No HPAI virus H5N1 has been detected in samples from healthy migratory birds of different species: great crested grebes (Podiceps cristatus), great cormorant (Phalacrocorax carbo), red-crested pochard (Netta rufina), gadwall (Anas strepera), common tern (Sterna hirundo), common coot (Fulica atra), black-headed gull (Larus ridibundus). Sequence analysis of the isolates showed that they belonged to the Asian HPAI virus H5N1 lineage, clade 2.3.2.1, and had close similarity with previous Russian H5N1 virus isolates of years 2014-2015.

Control measures Measures applied Control of wildlife reservoirs Screening No vaccination 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) Common Tern real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 09/06/2015 Positive All-Russian Research Institute for Animal Health (FGBI-ARRIAH) (National laboratory) Common Tern virus isolation 09/06/2015 Positive All-Russian Research Institute for Animal Health (FGBI-ARRIAH) (National laboratory) Great Crested Grebe reverse transcription - polymerase chain reaction (RT-PCR) 09/06/2015 Positive All-Russian Research Institute for Animal Health (FGBI-ARRIAH) (National laboratory) Great Crested Grebe virus isolation 09/06/2015 Positive

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

.../

http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=17878