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Equine disease surveillance: quarterly summary

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Equine disease surveillance, July to September 2017

  • Summary of UK disease surveillance for the third quarter of 2017

  • Problems with the supply of equine viral arteritis vaccine

  • Update on diseases occurring in the UK since 1 October 2017

  • Focus on recent experience of disease control and clearance during an outbreak of neurological EHV-1 infection

UK disease surveillance: 1 July to 30 September 2017


The results of virological testing for July to September 2017 are summarised in Table 1 and include data relating to equine viral arteritis (EVA), equine infectious anaemia (EIA) and West Nile virus (WNV) from the APHA, Weybridge. The sample population for the APHA is different from that for the other contributing laboratories, as the APHA’s tests are principally in relation to international trade (EVA, EIA and WNV). The APHA also provides testing for WNV as part of clinical work up of neurological cases, to exclude infection, on specific request and provided the local regional APHA office has been informed.

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Table 1:

Results of virological testing, July to September 2017

No equine viral notifiable diseases were confirmed in the UK in the third quarter of 2017.

Equine herpesvirus EHV-4 respiratory disease

On 3 July 2017, a single case of equine herpesvirus type 4 (EHV-4) respiratory disease was confirmed among a group of 15 animals on a premises in Ayrshire. The affected animal was a non-vaccinated five-year-old cob gelding that presented with pyrexia, profuse nasal discharge and lymphadenopathy on 30 June.

On 18 July, a case of EHV-4 respiratory disease was confirmed on different premises in Ayrshire. The affected animal was a non-vaccinated 10-year-old Irish sport horse that presented with profuse serous nasal discharge and lymphadenopathy on 14 July, having been dull and lethargic one week before the onset of signs. This horse was in contact with six other animals that had shown signs of conjunctivitis.

On 25 July, a case of EHV-4 respiratory disease was confirmed on premises in West Yorkshire. …

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