Interim Report – November 18 #03 (08.11.18)


Equine Infectious Anaemia (EIA)

On 2 November 2018, a positive EIA result was confirmed by the CFIA’s national reference laboratory for a horse on a premises in the municipal district of Bonnyville, Alberta. The horse had been sampled by an accredited veterinarian to comply with U.S. import conditions. No clinical signs of disease were noted at the time of sampling. A CFIA investigation is underway and as per program policy, a quarantine has been placed on the infected animal and its on-premises contact animals. Initial reports indicate that there are several equines on the affected premises. The quarantine will remain until all disease response activities have been completed, including follow-up testing and ordering the destruction of positive cases. Trace-out activities may require the CFIA to undertake actions at additional premises as outlined in the current program policy.



Equine Herpes Virus-4 (EHV-4) Respiratory Infection

On 7 November 2018, RESPE reported an outbreak of EHV-4 respiratory infection on a premises in Essonne. There were two affected animals and the positive diagnoses were confirmed by PCR on a nasopharyngeal swab by LABEO Frank Duncombe.



Equine Herpes Virus Neurological Disease

On 7 November 2018, The California Department of Food and Agriculture confirmed a case of EHV neurological disease in San Mateo County. The affected horse is a 24-year old Arabian mare that presented with neurological signs. The mare was removed from the property and placed in isolation and quarantined. CDFA is investigating to identify exposed horses which will be monitored for clinical signs and temperatures taken twice daily. Any horse displaying a fever or compatible clinical signs will be tested. CDFA will continue to monitor the situation and post new information as it becomes available.


Equine Infectious Anaemia (EIA)

On 6 November 2018, The Colorado Department of Agriculture’s, State Veterinarian’s Office has been notified that a third Colorado horse has tested positive for EIA. The investigation is ongoing but appears to be unrelated to the prior two cases of EIA in Colorado this year. After initial test results were received, confirmatory testing was completed at the National Veterinary Services Laboratory (NVSL) in Ames, IA. The horse was tested at a veterinary clinic in Weld County as part of a pre-purchase examination. This horse allegedly participated in unsanctioned horse races. The investigation into the current location of the horse is ongoing.


West Nile Virus (WNV)

Location Report Date Signalment Clinical Signs Vaccination Diagnostics Further Information Source
Sacramento County, CA 2 November 1yo mare Neurological signs NK NK Euthanased CA Department of Food and Agriculture
Warren County, TN 6 November 8yo Tennessee Walking Horse NK NK IgM Capture ELISA NK TN State Veterinarian



Kind regards

International Collating Centre