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2024-5-19 18:43:53


OIE: Highly pathogenic avian influenza, Thailand
submited by kickingbird at Jan, 25, 2008 8:36 AM from OIE

Information received on 23/01/2008 from Miss Chaweewan Leowijuk, Deputy Director General , Department of Livestock Development , Ministry of Agriculture and Cooperatives, Bangkok, Thailand
Summary
Report type
Immediate notification
Start date
18/01/2008
Date of first confirmation of the event
22/01/2008
Report date
23/01/2008
Date submitted to OIE
24/01/2008
Reason for notification
Reoccurrence of a listed disease
Date of previous occurrence
06/2007
Manifestation of disease
Clinical disease
Causal agent
Highly pathogenic avian influenza virus
Serotype
H5
Nature of diagnosis
Suspicion, Clinical, Laboratory (advanced), Necropsy
This event pertains to
a defined zone within the country
New outbreaks
Summary of outbreaks
Total outbreaks: 1
Outbreak Location
·          NAKHON SAWAN (Village No. 3, PiKul, ChumSaeng)
Total animals affected
Species
Susceptible
Cases
Deaths
Destroyed
Slaughtered
Birds
59670
4085
4085
55585
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Birds
6.85%
6.85%
100.00%
100.00%
* Removed from the susceptible population through death, destruction and/or slaughter
Description of Affected Population
broiler chickens from a commercial farm housed above a fish pond.
Epidemiology
Source of the outbreak(s) or origin of infection
·          Under investigation
Epidemiological comments
The event started on 18 January and was discovered by the veterinary authority on 21 January 2008, during Thailand´s routine intensive surveillance using clinical observation. Upon notification, the intensive investigation, sample collection for laboratory confirmation and culling of the remaining chickens were immediately commenced.
Control measures
Measures applied
·                                 Stamping out
·                                 Quarantine
·                                 Movement control inside the country
·                                 Screening
·                                 Zoning
·                                 Disinfection of infected premises/establishment(s)
·                                 Dipping / Spraying
·                                 Vaccination prohibited
·                                 No treatment of affected animals
Measures to be applied
·                                 No other measures
Diagnostic test results
Laboratory name and type
Lower Northern Veterinary Research and Development (Phitsanulok) Center, Department of Livestock Development (Local laboratory)
Tests and results
Species
Test
Test date
Result
Birds
haemagglutination (HA) test
 
Pending
Birds
haemagglutination inhibition test (HIT)
 
Pending
Birds
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)
22/01/2008
Positive
Birds
reverse transcription – polymerase chain reaction (RT-PCR)
 
Pending
Birds
virus isolation
 
Pending
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