OIE: Highly pathogenic avian influenza, Myanmar
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 |
|
| 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 |
|