Information received on 28/08/2007 from Dr Toshiro Kawashima, Director, International Animal Health Affairs Office, Ministry of Agriculture, Forestry and Fisheries, Tokyo , Japan
Summary
| Report type |
Immediate notification |
| Start date |
14/08/2007 |
| Date of confirmation of event |
17/08/2007 |
| Report date |
28/08/2007 |
| Date submitted to OIE |
28/08/2007 |
| Reason for notification |
Reoccurrence of a listed disease |
| Date of previous occurrence |
1972 |
| Manifestation of disease |
Clinical disease |
| Causal agent |
Equine influenza virus A |
| Nature of diagnosis |
Suspicion, Clinical, Laboratory (basic) |
| Report pertains to |
Entire country |
New outbreaks
| Summary of outbreaks |
Total outbreaks: 2 |
| Outbreak Location |
- SHIGA (Ritto city
- IBARAKI (Miho village)
|
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Destroyed |
Slaughtered |
| Equidae |
2916 |
30 |
0 |
0 |
0 | |
| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible removed* |
| Equidae |
1.03% |
0.00% |
0.00% |
0.00% | * Removed from the susceptible population either through death, destruction or slaughter |
Epidemiology
| Source of infection |
|
| Epidemiological comments |
We are still working on isolating the virus. Confirmatory testing is being undertaken. As of 20th August, 9 horses have given positive results to an influenza A virus screening test at Miho village. As of 17th August, 21 horses have given positive results to an influenza H3 virus by reverse transcription-polymerase chain reaction(RT-PCR) at Ritto city. |
Control measures
| Measures already applied |
- Movement control inside the country
- Screening
- Disinfection of infected premises/establishment(s)
- Quarantine
- Vaccination permitted
- Treatment of affected animals (symptomatic treatment)
|
| Measures to be applied |
|
Diagnostic test results
| Laboratory name and type |
Epizootic Research Center, Equine Research Institute of Japan Racing Association (Private Laboratory) |
| Tests and results |
| Species |
Test |
Test date |
Result |
| Equidae |
reverse transcription – polymerase chain reaction (RT-PCR) |
17/08/2007 |
Positive | |
| Laboratory name and type |
Miho Training Center (Private Laboratory) |
| Tests and results |
| Species |
Test |
Test date |
Result |
| Equidae |
antigen (Ag) detection ELISA |
20/08/2007 |
Positive | |
| Laboratory name and type |
Ritto Training Center (Private Laboratory) |
| Tests and results |
| Species |
Test |
Test date |
Result |
| Equidae |
antigen (Ag) detection ELISA |
17/08/2007 |
Positive | |
