OIE: Highly pathogenic avian influenza, Cambodia

Summary

Report type Immediate notification
Start date 06/04/2007
Date of confirmation of event 10/04/2007
Report date 12/04/2007
Date submitted to OIE 12/04/2007
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 05/09/2006
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Suspicion, Clinical, Laboratory (advanced)
Report pertains to Entire country

New outbreaks

Outbreak 1 Laork, Kreak, Ponhea Kreak, KG. CHAM
Date of start of outbreak 06/04/2007
Outbreak status Continuing (or date resolved not submitted)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 1086 302 302 784 0
Affected population backyard poultry (chickens and ducks) in one village (5 households)
Summary of outbreaks Total outbreaks: 1
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible removed*
Birds 27.81% 27.81% 100.00% 100.00%
* Removed from the susceptible population either through death, destruction or slaughter

Epidemiology

Source of infection
  • Unknown or inconclusive
  • Under investigation
Epidemiological comments Stamping out was undertaken on 11 April 2007. Surveillance in the villages around the outbreak is ongoing.

Control measures

Measures already applied
  • Movement control inside the country
  • Screening
  • Disinfection of infected premises/establishment(s)
  • Stamping out
  • Vaccination permitted
  • No treatment of affected animals
Measures to be applied
  • None specified

Diagnostic test results

Laboratory name and type Pasteur Institute, Cambodia (Regional Reference Laboratory)
Tests and results
Species Test Test date Result
Birds reverse transcription – polymerase chain reaction (RT-PCR) 10/04/2007 Positive
Birds pathogen isolation by egg inoculation 10/04/2007 Positive
Laboratory name and type National Animal Health and Production Investigation Center (NAHPIC) (National laboratory)
Tests and results
Species Test Test date Result
Birds pathogen isolation by egg inoculation 07/04/2007 Positive
Birds reverse transcription – polymerase chain reaction (RT-PCR) 07/04/2007 Positive

Map of outbreak locations

Location of current outbreaks