Interim ICC Report – January 19 #06 (11.01.19)
Equine Herpes Virus-1 (EHV-1) Abortion
On 9 January 2019, RESPE reported a case of EHV-1 Abortion on a premises in Sarthe. The positive diagnosis was confirmed by PCR on fetal tissue by LABEO Orne.
On 10 January 2019, RESPE reported two separate cases of strangles. The first was on a premises in Moselle. The positive diagnosis was confirmed by culture on purulent nasal discharge by LABEO Frank Duncombe. The second case was on a premises in Orne and positive diagnosis was confirmed by culture on a swab by LABEO Frank Duncombe.
On 11 January 2019, RESPE confirmed three separate outbreaks of strangles. The first was on a premises in Calvados. There were four positive horses, confirmed by PCR on a nasopharyngeal swab by LABEO Frank Duncombe. The second case was on a riding school premises in Charente. Positive diagnosis was confirmed by PCR on purulent nasal discharge. The third case was on a premises in Ardèche. Positive diagnosis was confirmed by PCR on a nasopharyngeal swab by LABEO Frank Duncombe.
Equine Herpes Virus-4 (EHV-4) Respiratory Infection
On 10 January 2019, AHT confirmed two separate cases of EHV-4 respiratory infection. The first was on a premises in Devon. The affected horse was a nine-year-old that presented with a seven day history of coughing, inappetence, lymphadenopathy, mucopurulent nasal discharge and pyrexia. There are a total of ten in-contacts. The second case was on a premises in Buckinghamshire. The affected horse was a four-year-old mare that presented with coughing and lethargy. For both, positive diagnoses were confirmed by PCR on a nasopharyngeal swab.
Equine Herpes Virus-1 (EHV-1) Neurological Disease
A case of EHM has been confirmed by the New York State Department of Agriculture and Markets in a horse on a premises in Schuyler County, New York. The index case is an aged Quarter Horse mare that exhibited leaning sideways and posterior ataxia. She was positive for EHV-1 neurological disease on nasal swab late the previous week. A few days later, a Quarter Horse gelding on the premises with a high fever also tested PCR positive for the virus on nasal swab. The mare, gelding and other horses on the farm have been quarantined. Full biosecurity measures including daily clinical monitoring and twice daily temperaturing have been implemented. No horses have left the farm over the two weeks preceding the onset of clinical signs in the index case nor since the disease was confirmed.
The State’s Veterinarian’s Office of the Virginia Department of Agriculture and Consumer Services confirmed three horses positive for EHV-1 neurological disease on 9 January. The index premises was a pleasure horse farm in Hanover County. Two horses that had developed severe neurological signs were euthanased. The third horse began exhibiting neurological signs on 10 January. The index premises and an adjacent farm sharing a common fence line have been placed under quarantine. All horses and donkeys on both premises are being closely monitored and temperatures taken twice daily. No horses on the index farm have left the premises in the two weeks prior to the onset of illness noted in the two first affected horses.
International Collating Centre