Vietnam - 1 new outbreak of highly pathogenic avian influenza H5N6 in backyard birds, Lao Cai province (OIE, August 20, 2015)

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Highly pathogenic avian influenza, Vietnam

Information received on 20/08/2015 from Dr Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hano?, Vietnam

Summary Report type Immediate notification Date of start of the event 18/08/2015 Date of confirmation of the event 19/08/2015 Report date 20/08/2015 Date submitted to OIE 20/08/2015 Reason for notification Reoccurrence of a listed disease Date of previous occurrence 08/2015 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N6 Nature of diagnosis Clinical, Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (1)

Outbreak 1 Xuan Giao, Xuan Giao, Bao Thang, LAO CAI Date of start of the outbreak 18/08/2015 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 700 700 200 500 0

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Birds 700 700 200 500 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 100.00% 28.57% 28.57% 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 Disinfection / Disinfestation Surveillance outside containment and/or protection zone Modified stamping out 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 National Centre for Veterinary Diagnosis (NCVD) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 19/08/2015 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=18467