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Highly Pathogenic Avian Influenza in Thailand

by 5m Editor
6 February 2004, at 12:00am

THAILAND - This is a Follow-up report (No. 1) via OIE on the recent outbreak of Avian Influenza in Thailand.

Highly Pathogenic Avian Influenza in Thailand - THAILAND - This is a Follow-up report (No. 1) via OIE on the recent outbreak of Avian Influenza in Thailand.

See also: 23 January 2004

Information received on 30 January 2004 from Dr Yukol Limlamthong, Director General, Department of Livestock Development, Ministry of Agriculture and Cooperatives, Bangkok:

End of previous report period: 23 January 2004 (see Disease Information, 17 [4], 16, dated 23 January 2004).

End of this report period: 30 January 2004.

New outbreaks:

Location No. of outbreaks
32 provinces 156

Description of affected population in the new outbreaks: broilers, layers, native chickens, ducks, geese, turkeys, ostriches, quail, peacocks.

Number of animals in the new outbreaks (partial data*):

Location (Province) No. of affected farms No. of birds No. of farms covered by stamping out No. of birds destroyed
Angthong 1,313 2,955,056 287 2,078,747
Bangkok 73 1,531,224 ... 1,057,685
Chainat 2 5,764 2 5,764
Kalasin 7 24,958 81 95,960
Kampaengphet ... 221,109 ... 220,745
Kanchanaburi 2,863 1,196,263 1,892 927,137
Nakhonpathom 242 601,132 10 65,150
Phichit 36 ... ... 234
Phitsanuloke ... ... ... 4,380
Ratchaburi 15 439,900 9 198,780
Sakonnakhon 203 7,017 203 7,017
Singburi 45 657,775 7 302,575
Sukhothai ... ... 2 83,086
Suphanburi ... ... 850 4,706,323
Uthaithani 1,524 124,883 536 113,025
Uttaradit 477 2,947,534 59 328,529

* These data relate to 16 of the 32 infected provinces.

Diagnosis:

A. Laboratory where diagnosis was made: National Institute of Animal Health, Regional Veterinary Research and Development Centers (7 centers), Department of Livestock Development.

B. Diagnostic tests used:

- haemagglutination inhibition test;

- agar gel precipitation test;

- virus isolation;

- intravenous pathogenicity index test.

Positive results were obtained between 25-30 January 2004; 66,082 samples were tested of which 156 were positive.

C. Causal agent: highly pathogenic avian influenza virus type A, subtype H5.

Epidemiology:

A. Source of agent / origin of infection: under investigation.

B. Mode of spread: horizontal spread by fomites.

Control measures during reporting period:

- stamping out;

- quarantine;

- movement control inside the country;

- screening;

- zoning.

Vaccination is prohibited.

Source: Office International des Epizooties - 6th February 2004

5m Editor