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