Vietnam - Government report of new H5N6 outbreak in Lang Son province - January 14, 2016 - OIE

[Gert van der Hoek]

Department of Animal Health

I. Animal disease situation - 14/01/2016

1.HPAI

Today, there is one new outbreak reported from Lang Son province:

Lang Son province: On 2 January 2016, an HPAI A/H5N6 occurred in one livestock household located in Bang Huu commune, Chi Lang district. The outbreak resulted in 150 chickens infected and died. All chickens in the infected flock (220 chickens) had been culled. The SubDAH incorporated with the local authority applied all control measures following regulations.

Currently, there are 5 HPAI A/H5N6 outbreaks detected in 5 districts of 4 provinces, which are not yet over 21 days as following:

(1) Quang Ngai province: 01 outbreak in Tinh Ha commune, Son Tinh district (was over 6 days);

(2) Kon Tum province: 02 outbreaks in 2 districts:
a) Ngoc Hoi district: 01 outbreak in Dak Kan commune (was over 4 days);
b) Dak Ha district: 01 outbreak in Dak Ngoc commune (was over 1 day).

(3) Tuyen Quang province: 01 outbreak in Duc Ninh commune, Ham Yen district (was over 3 days);

(4) Lang Son province: 01 outbreak in Bang Huu commune, Chi Lang district (was over 3 days).

[Pathfinder]

Highly pathogenic avian influenza, Vietnam

Information received on 15/01/2016 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 Follow-up report No. 27 Date of start of the event 18/08/2015 Date of confirmation of the event 19/08/2015 Report date 15/01/2016 Date submitted to OIE 15/01/2016 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 Related reports Immediate notification (20/08/2015) Follow-up report No. 1 (31/08/2015) Follow-up report No. 2 (11/09/2015) Follow-up report No. 3 (14/09/2015) Follow-up report No. 4 (30/09/2015) Follow-up report No. 5 (03/10/2015) Follow-up report No. 6 (13/10/2015) Follow-up report No. 7 (13/10/2015) Follow-up report No. 8 (20/10/2015) Follow-up report No. 9 (24/10/2015) Follow-up report No. 10 (27/10/2015) Follow-up report No. 11 (28/10/2015) Follow-up report No. 12 (02/11/2015) Follow-up report No. 13 (03/11/2015) Follow-up report No. 14 (13/11/2015) Follow-up report No. 15 (17/11/2015) Follow-up report No. 16 (23/11/2015) Follow-up report No. 17 (28/11/2015) Follow-up report No. 18 (30/11/2015) Follow-up report No. 19 (07/12/2015) Follow-up report No. 20 (10/12/2015) Follow-up report No. 21 (10/12/2015) Follow-up report No. 22 (13/12/2015) Follow-up report No. 23 (23/12/2015) Follow-up report No. 24 (06/01/2016) Follow-up report No. 25 (11/01/2016) Follow-up report No. 26 (14/01/2016) Follow-up report No. 27 (15/01/2016)

New outbreaks (1)

Outbreak 1 Bang Huu, Bang Huu, Chi Lang, LANG SON Date of start of the outbreak 02/01/2016 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 220 155 155 65 0

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Birds 220 155 155 65 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 70.45% 70.45% 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 Disinfection / Disinfestation Surveillance outside containment and/or protection zone Stamping out Surveillance within containment and/or protection zone No vaccination No treatment of affected animals Measures to be applied No other measures

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

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