Vietnam - 1 new outbreak of highly pathogenic avian influenza H5N6 in backyard birds, Kon Tum (OIE, September 27, 2017)

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Highly pathogenic avian influenza, Vietnam

Information received on 28/09/2017 from Dr Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoď, Vietnam

Summary Report type Immediate notification Date of start of the event 23/09/2017 Date of confirmation of the event 26/09/2017 Report date 27/09/2017 Date submitted to OIE 28/09/2017 Reason for notification Recurrence of a listed disease Date of previous occurrence 27/04/2017 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N6 Nature of diagnosis Laboratory (advanced) This event pertains to the whole country

New outbreaks (1)

Outbreak 1 Dak Ngoc, Dak Ngoc, Dak Ha, KON TUM Date of start of the outbreak 23/09/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 4700 2500 500 4200 0

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 4700 2500 500 4200 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 53.19% 10.64% 20.00% 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 Vaccination in response to the outbreak (s) Surveillance outside containment and/or protection zone Stamping out Disinfection No treatment of affected animals Measures to be applied No other measures

Diagnostic test results Laboratory name and type Species Test Test date Result Regional Animal Health Office no. 5 (RAHO5) (Regional Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 26/09/2017 Positive

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

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