Information received on 19/02/2007 from Mr Singkham Phonvisay

Summary

      Report type Immediate notification
      Start date 03/02/2007
      Date of confirmation of event 07/02/2007
      Report date 19/02/2007
      Date submitted to OIE 19/02/2007
      Reason for notification Reoccurrence of a listed disease
      Date of previous occurrence 07/2006
      Manifestation of disease Clinical disease
      Causal agent Highly pathogenic avian influenza virus
      Serotype H5N1
      Nature of diagnosis Suspicion, Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
      Report pertains to Entire country

New Outbreaks Summary of outbreaks Total outbreaks: 2
      Outbreak Location a.. VIENTIANE CAPITAL (Phonpapaothong 1 , Sisattanak; Phonpapaothong 2, Sisattanak)
    
      Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered
            Birds 1054 112 112 42 0
    
      Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible removed*  
            Birds 10.63% 10.63% 100.00% 14.61%
      * Removed from the susceptible population either through death, destruction or slaughter


Epidemiology Source of infection a.. Unknown or inconclusive
    
      Epidemiological comments Active surveillance in a 5-km-radius zone as well as nationwide is being carried out. Stamping out of the outbreak of Phonpapaothong 1 is ongoing.  


Control measures Measures already applied a.. Movement control inside the country
        b.. Screening
        c.. Disinfection of infected premises/establishment(s)
        d.. Dipping / Spraying
        e.. Stamping out
        f.. Zoning
        g.. Vaccination permitted
        h.. No treatment of affected animals
    
      Measures to be applied a.. None specified
    


Diagnostic test results Laboratory name and type National Animal Health Centre (NACH), Vientiane (National laboratory)
      Tests and results Species Test Test date Result
            Birds haemagglutination inhibition test (HIT) 07/02/2007 Positive
            Birds virus isolation 07/02/2007 Positive
    
      Laboratory name and type National Centre for Veterinary Diagnosis (NCVD), Hanoi, Vietnam (National laboratory)
      Tests and results Species Test Test date Result
            Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 08/02/2007 Positive