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2024-11-24 4:12:22


OIE: Highly pathogenic avian influenza, Myanmar
submited by kickingbird at Oct, 25, 2007 12:21 PM from OIE

Information received on 24/10/2007 from Mr U Maung Maung Nyunt, Director General, Livestock Breeding and Veterinary Department, Ministry of Livestock & Fisheries , RANGOON, Myanmar

Summary

Report type Immediate notification
Start date 19/10/2007
Date of confirmation of event 19/10/2007
Report date 24/10/2007
Date submitted to OIE 24/10/2007
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 28/07/2007
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 Defined zone within the country

New outbreaks

Outbreak 1 (OIE ref 6519) Oatsu Quarter, Bago
Date of start of outbreak 19/10/2007
Outbreak status Continuing (or date resolved not submitted)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 33859 400 400 33459 0
Affected population 32070 quails, 3118 quail eggs, 52 kg of feed, 1242 layer chickens, 147 ducklings and 30500 hatching duck eggs were all destroyed.
Summary of outbreaks Total outbreaks: 1
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible removed*
Birds 1.18% 1.18% 100.00% 100.00%
* Removed from the susceptible population either through death, destruction or slaughter

Epidemiology

Source of infection
  • Unknown or inconclusive
Epidemiological comments Thanatpin is considered as a high risk township by international epidemiologists because it is situated very close to the lake Moeyungyi occupied by wild birds, with a high population of ducks (nearly eight hundred thousands) and with a rapidly increasing number of raised quails. The source of infection is probably transmitted from seropositive ducks, infecting quails or chickens and other fomites.

Control measures

Measures already applied
  • Disinfection of infected premises/establishment(s)
  • Dipping / Spraying
  • Quarantine
  • 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) 19/10/2007 Positive
Birds polymerase chain reaction (PCR) 20/10/2007 Positive
Birds rapid tests 19/10/2007 Positive
Birds rapid tests 20/10/2007 Positive

Map of outbreak locations

Location of current outbreaks
 


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