OIE: Highly pathogenic avian influenza, Nigeria
Information received on 25/07/2008 from Dr Junaidu A. Maina, Director, Federal Ministry of Agriculture and Rural Development, Federal Dept. of Livestock & Pest Control Services, ABUJA, Nigeria
Summary
| Report type |
Immediate notification |
| Start date |
22/07/2008 |
| Date of first confirmation of the event |
24/07/2008 |
| Report date |
25/07/2008 |
| Date submitted to OIE |
25/07/2008 |
| Reason for notification |
Reoccurrence of a listed disease |
| Date of previous occurrence |
09/01/2008 |
| Causal agent |
Highly pathogenic avian influenza virus |
| Serotype |
H5N1 |
| Nature of diagnosis |
Laboratory (advanced) |
| This event pertains to |
the whole country |
New outbreaks
| Summary of outbreaks |
Total outbreaks: 2 |
| Outbreak Location and Affected population |
- KATSINA (Kadarko quarters, Katsina) : A small backyard flock with mixed species of local chickens, Guinea fowls and ducks
- KANO (Fagen Kawo, Dawakin Tofa) : A commercial backyard poultry flock, but the owner keeps few ducks within the premises
|
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Destroyed |
Slaughtered |
| Birds |
4363 |
1545 |
1545 |
2818 |
0 | |
| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
| Birds |
35.41% |
35.41% |
100.00% |
100.00% |
* Removed from the susceptible population through death, destruction and/or slaughter |
Epidemiology
| Source of the outbreak(s) or origin of infection |
|
| Epidemiological comments |
Detailed investigation is on-going, but information so far indicates the introduction of new species into the existing flock as the possible cause of the outbreak |
Control measures
| Measures applied |
- Quarantine
- Disinfection of infected premises/establishment(s)
- Modified stamping out
- Vaccination prohibited
- No treatment of affected animals
|
| Measures to be applied |
- Movement control inside the country
- Screening
|
Diagnostic test results
| Laboratory name and type |
National Veterinary Research Institute, Vom (Regional Reference Laboratory) |
| Tests and results |
| Species |
Test |
Test date |
Result |
| Birds |
haemagglutination inhibition test (HIT) |
24/07/2008 |
Positive |
| Birds |
reverse transcription – polymerase chain reaction (RT-PCR) |
24/07/2008 |
Positive |
| Birds |
virus isolation |
24/07/2008 |
Positive | |
Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. |