Equine Flu April 2019

Outbreaks

73. Cheshire
On 26 April 2019, AHT confirmed an outbreak of EI on a premises in Cheshire. The laboratory confirmed positive had been recently imported from Ireland and presented with clinical signs on arrival at the premises, including coughing, nasal discharge and pyrexia. The positive diagnosis was confirmed by PCR on a nasopharyngeal swab. It arrived with one other horse that was also displaying similar clinical signs but swabbed negative. Both cases are thought to be unvaccinated so a paired serum sample from this animal will be tested to confirm a diagnosis of flu. A negative nasopharyngeal swab may be obtained if a case is being swabbed early or later on in the course of infection. Both horses were isolated on arrival. There are 15 other vaccinated horses on the premises and these are being closely monitored.

72. Warwickshire
On 25 April 2019, AHT confirmed an outbreak of EI on a premises in Warwickshire. There are two unvaccinated non-Thoroughbreds with laboratory confirmed infection, amongst a group of around 30 largely unvaccinated horses. There are a total of seven displaying clinical signs of coughing but there has been no pyrexia detected. The premises received a new arrival in the preceding week. Positive diagnoses were confirmed by PCR on nasopharyngeal swabs. Voluntary movement restrictions have been instigated.

71. Cheshire
On 25 April 2019, AHT confirmed an outbreak of EI on a premises in Cheshire. The affected horse was a non-Thoroughbred that had only received a first vaccination in its primary course in the preceding few weeks. It was recently imported from Ireland and presented with coughing and nasal discharge. There are around 30 vaccinated in contacts, with one showing similar clinical signs. The positive diagnosis was confirmed by PCR on a nasopharyngeal swab. Voluntary movement restrictions have been instigated.

70. Yorkshire
On 19 April 2019, Rossdales confirmed a case of EI on a premises in Yorkshire. The affected horse presented with mucopurulent nasal discharge and pyrexia. Vaccination status is unknown. Positive diagnosis was confirmed by PCR on a nasopharyngeal swab.

69. Lancashire
On 18 April 2019, AHT confirmed an outbreak of EI on a premises in Lancashire. There are two unvaccinated non-Thoroughbred laboratory confirmed positives from one premises that presented with coughing, nasal discharge and pyrexia. There are approximately six premises within the vicinity, with a total of around 70 horses, with the majority of these being unvaccinated. Clinical signs have been reported in multiple horses in this vicinity over the last few weeks. Severity of signs are predominantly mild to moderate with coughing and nasal discharge, but a few cases have required treatment for secondary bacterial infection. Voluntary movement restrictions have been put in place.

68. Aberdeenshire
On 18 April 2019, AHT confirmed an outbreak of EI on a premises in Aberdeenshire. The affected horse is a non-Thoroughbred that had only received a first vaccination in its primary course in the preceding few weeks. It was a new arrival that had been placed in isolation on a remote premises, as per the receiving premises protocol for new arrivals. Two days after arrival it developed clinical signs of coughing, nasal discharge and pyrexia. The positive diagnosis was confirmed by PCR on a nasopharyngeal swab. There are no in contacts. The horse will remain in isolation for three weeks.

67. Lancashire
On 18 April 2019, AHT confirmed an outbreak of EI on a premises in Lancashire. There are multiple unvaccinated non-Thoroughbreds demonstrating clinical signs of coughing, nasal discharge and pyrexia. There is one laboratory confirmed positive by PCR on a nasopharyngeal swab. There are 6 young horses in the index group and this group received a new arrival last week which presented with clinical signs of coughing shortly after arrival. There is also a further number of horses in another group on the premises, which are also displaying clinical signs. The premises has instigated voluntary movement restrictions and these will remain in place until two weeks after resolution of clinical signs in the group.

66. Yorkshire
On 17 April 2019, AHT reported a case of EI on a premises in North Yorkshire. The affected horse is an unvaccinated non-Thoroughbred that presented with a history of coughing and bilateral nasal discharge. The positive diagnosis was confirmed by PCR on a nasopharyngeal swab by Axiom Veterinary Laboratories. There are a total of three vaccinated in contacts and these have not displayed any clinical signs. Voluntary
movement restrictions are in place.

65. Gloucestershire
On 11 April 2019, AHT confirmed a case of EI on a premises in Gloucestershire. The affected horse received a first influenza vaccination two weeks prior to diagnosis. It presented with coughing and nasal discharge a few days after arriving from Ireland. The positive diagnosis was confirmed by PCR on a nasopharyngeal swab. There are a total of three in-contacts, of which one has received a first influenza vaccination recently and the other two are up to date on their vaccinations. Voluntary movement restrictions have been instigated.

64. Berkshire
On 11 April 2019, AHT confirmed a case of EI on a premises in Berkshire. The affected horse is an unvaccinated non-Thoroughbred that presented with coughing, nasal discharge and pyrexia. There have been two other unvaccinated horses with similar clinical signs in the last week or so. There are also two vaccinated horses on the premises that have not shown any clinical signs. The positive diagnosis was confirmed by PCR on a nasopharyngeal swab.

63. Hertfordshire
On 9 April 2019, AHT confirmed a case of EI on a premises in Hertfordshire. The affected horse is an unvaccinated non-Thoroughbred that was a recent new arrival. It presented with coughing, nasal discharge and pyrexia. There are a total of nine in contacts that are all recently vaccinated. The affected horse has been isolated and all in contacts are being closely monitored. The positive diagnosis was confirmed by PCR on a nasopharyngeal swab.

62. Fife
On 3 April 2019, AHT confirmed a case of EI on a premises in Fife. The affected horse is an unvaccinated non-Thoroughbred that arrived at its destination on 28 March 2019. It had travelled over mainland Europe in the preceding 14 days prior to arrival. On arrival it presented with coughing, mucopurulent nasal discharge, inappetence, pyrexia and tachypnoea. A nasopharyngeal swab taken on day of arrival had a low copy number negative result on PCR. Serology was performed, with evidence of titres to EI, confirming infection in this unvaccinated horse. Secondary complications from EI infection during transit have been severe, with the case presenting with pleuropneumonia on arrival at its new premises. The case is receiving veterinary treatment in isolation and is showing a gradual improvement.