Vietnam - 1 new outbreak of highly pathogenic avian influenza H5N6 in birds in village, Quang Ninh Province (OIE, February 4, 2020)

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Highly pathogenic avian influenza, Vietnam

Information received on 04/02/2020 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 18/01/2020 Date of confirmation of the event 21/01/2020 Report date 04/02/2020 Date submitted to OIE 04/02/2020 Reason for notification Recurrence of a listed disease Date of previous occurrence 15/11/2019 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N6 Nature of diagnosis Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (1)

Outbreak 1 Duc Yen, Duc Yen, Dam Ha, Quang Ninh Date of start of the outbreak 18/01/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3000 2500 2200 300 0

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3000 2500 2200 300 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 83.33% 73.33% 88.00% 83.33% *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 permitted (if a vaccine exists) 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 2 (Regional Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 21/01/2020 Positive

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

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https://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=33160