OIE: Highly pathogenic avian influenza,Myanmar

Information received on 09/06/2007 from Mr U Maung Maung Nyunt, Director General, Livestock Breeding and Veterinary Department, Ministry of Livestock & Fisheries , RANGOON, Myanmar

Summary

Report type Follow-up report No. 6
Start date 26/02/2007
Date of confirmation of event 28/02/2007
Report date 09/06/2007
Date submitted to OIE 11/06/2007
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 27/04/2006
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Suspicion, Clinical, Laboratory (advanced), Necropsy
Report pertains to Entire country
Related reports

New outbreaks

Outbreak 1 Hanthawaddy ward, Bago, Bago, BAGO
Date of start of outbreak 02/06/2007
Outbreak status Continuing (or date resolved not submitted)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 989 28 28 961 0
Affected population layer poultry (battery cage)
Summary of outbreaks Total outbreaks: 1
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible removed*
Birds 2.83% 2.83% 100.00% 100.00%
* Removed from the susceptible population either through death, destruction or slaughter

Epidemiology

Source of infection
  • Low biosecurity
Epidemiological comments During post-outbreak surveillance at risk area (Bago township), a sample from dead chicken was found positive for HPAI H5N1 in PCR test.

Control measures

Measures already applied
  • Movement control inside the country
  • Screening
  • Disinfection of infected premises/establishment(s)
  • Dipping / Spraying
  • Quarantine
  • Modified stamping out
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Control of wildlife reservoirs
  • Zoning

Diagnostic test results

Laboratory name and type Veterinary Diagnostic Laboratory (Yangon) (National laboratory)
Tests and results
Species Test Test date Result
Birds polymerase chain reaction (PCR) 05/06/2007 Positive
Birds rapid tests 03/06/2007 Positive
Birds rapid tests 04/06/2007 Negative
Birds virus isolation 07/06/2007 Positive

Map of outbreak locations

Location of current outbreaks