Vietnam - 3 new outbreaks of highly pathogenic avian influenza H5N1 in birds in villages, Can Tho, Dong Thap, Vinh Long (OIE, May 10, 2020)

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Highly pathogenic avian influenza, Vietnam

Information received on 10/05/2020 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 16/04/2020 Date of confirmation of the event 17/04/2020 Report date 10/05/2020 Date submitted to OIE 10/05/2020 Reason for notification Recurrence of a listed disease Date of previous occurrence 19/03/2020 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N1 Nature of diagnosis Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (3)

Outbreak 1 Truong Lac, Truong Lac, O Mon, Can Tho Date of start of the outbreak 16/04/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1970 1970 1500 470 0

Outbreak 2 An Nhon, An Nhon, Chau Thanh, Dong Thap Date of start of the outbreak 23/04/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 300 300 260 40 0

Outbreak 3 An Phuoc, An Phuoc, Mang Thit, Vinh Long Date of start of the outbreak 27/04/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Village Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 800 800 400 400 0

Summary of outbreaks Total outbreaks: 3 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3070 3070 2160 910 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 100.00% 70.36% 70.36% 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 permitted (if a vaccine exists) No treatment of affected animals Measures to be applied Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone Stamping out Disinfection

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

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https://www.oie.int/wahis_2/public/w...reportid=34293