Laos - 5 new outbreaks of highly pathogenic avian influenza H5N1 in birds in farms (OIE, August 10, 2017)

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Highly pathogenic avian influenza, Laos

Information received on 10/08/2017 from Dr Somphanh Chanphengxay, Director General, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Laos

Summary Report type Immediate notification Date of start of the event 02/07/2017 Date of confirmation of the event 12/07/2017 Report date 10/08/2017 Date submitted to OIE 10/08/2017 Reason for notification Recurrence of a listed disease Date of previous occurrence 26/10/2016 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N1 Nature of diagnosis Clinical, Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (5)

Outbreak 1 Phiengta, Thathome, XAYSOMBOUN SPECIAL REGION Date of start of the outbreak 02/07/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 2635 2216 2216 419 0 Affected population Ducks and hens

Outbreak 2 Pu, Thathome, XAYSOMBOUN SPECIAL REGION Date of start of the outbreak 02/07/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3452 395 395 3057 0 Affected population Ducks and hens

Outbreak 3 Hadsamkhone, Thathome, XAYSOMBOUN SPECIAL REGION Date of start of the outbreak 02/07/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 2787 1774 1774 1013 0 Affected population Ducks and hens

Outbreak 4 Donglankham, Sanasomboun, CHAMPASAK Date of start of the outbreak 20/07/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 8800 8750 8750 50 0 Affected population Hens

Outbreak 5 Nasong, Thathome, XAYSOMBOUN SPECIAL REGION Date of start of the outbreak 25/07/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1662 1360 1360 302 0 Affected population Ducks and hens

Summary of outbreaks Total outbreaks: 5 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 19336 14495 14495 4841 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 74.96% 74.96% 100.00% 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 Movement control inside the country Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone Stamping out Disinfection 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 National Animal Health Laboratory (National laboratory) Birds real-time PCR 12/07/2017 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/wa...reportid=24527