Interim ICC Report – February 2019 #04 (07.02.19)
Interim Report Feb 19 #4 (07.02.19France on EHV-4 Respiratory Infection, Equine Influenza and Strangles, Germany on Equine Influenza and EHV-1 Neurological Disease, UK on Equine Influenza and USA on EIA & Equine Influenza
Equine Herpes Virus-4 (EHV-4) Respiratory Infection
On 6 February 2019, RESPE reported an outbreak of EHV-4 respiratory infection on a premises in Orne. Positive diagnoses were confirmed by PCR on nasopharyngeal swabs by LABEO Frank Duncombe.
Equine Influenza (EI)
On 7 February 2019, RESPE reported an outbreak of EI in Orne. There are a total of nine confirmed cases, with a further three affected, amongst a group of 50. Affected horses are French Trotters aged between two and three-years-old and they presented with coughing, nasal discharge and pyrexia. Positive diagnoses were made by PCR on nasopharyngeal swabs.
On 5 February 2019, RESPE reported a case of strangles on a premises in Orne. Positive diagnosis was confirmed by culture on purulent nasal discharge by LABEO Frank Duncombe.
On 7 February 2019, Labor Dr. Böse GmbH confirmed two cases of EI on two separate presmies in Lower Saxony. The two un-vaccinated horses presented with pyrexia and coughing. Diagnoses were confirmed by PCR on nasopharyngeal swabs.
Equine Herpes Virus-1 Neurological Disease
On 4 February 2019, Ludwig-Maximilians University Munich reported two separate outbreaks of EHV-1 neurological disease in the wider Munich area. These two outbreaks are likely not inter-related with no common denominator.
The distance between the two is 80 km [approx. 50 mi]. One outbreak is in the southwest of Munich, the other in the west of Munich. Both outbreaks are in riding boarding facilities with a mixed horse population. However, they are predominantly composed of Warmbloods. In both facilities there are pyrexic horses, ataxic horses, and at least two horses in each facility have been euthanased due to quadriplegia. EHV-1 diagnosis has been established via nasal swab qPCR on several occasions. Both facilities are under voluntary quarantine as EHV-1 is not a reportable disease in Germany.
Equine Influenza (EI)
On 6 February 2019, AHT confirmed an outbreak of EI on a racing yard in Cheshire. Three vaccinated Thoroughbreds have been confirmed positive by PCR on nasopharyngeal swabs. Affected horses presented with coughing and nasal discharge among a total of 10 animals with similar clinical signs among a group of 120. The premises has stopped all horse movements and all horses are being closely monitored. The British Horseracing Authority subsequently cancelled all four racing meetings schedule to take place in Britain on 7 February 2019 in order to evaluate the situation, this situation will remain under review as evidence accumulates on surveillance testing among racing yards.
On 30 January 2019, Rossdales confirmed a case of EI on a premises in Leicestershire. The affected horse was a vaccinated five-year-old non-Thoroughbred gelding that presented with coughing, nasal discharge and transient pyrexia (for 24 hours). There were a total of six vaccinated in contacts. All in contacts were closely monitored and none developed clinical signs.
Equine Infectious Anemia(EIA)
The Tennessee State Veterinarian has reported four cases of EIA on a farm in Rutherford County. All four animals have been euthanased. Six other horses on the premises have tested negative for the infection. They are under quarantine restrictions until they have been retested at an appropriate interval since the index cases were discovered, and confirmed negative for evidence of EIA virus infection.
A case of influenza has been confirmed in a ten-year-old Warmblood gelding on a premises in Hamilton County, Indiana. Onset of clinical signs is not provided. The affected horse displayed signs of fever, nasal discharge, and cough. History of vaccination against ‘flu is unknown. The horse’s clinical condition is improving.
International Collating Centre