England Reports 50 Cases, Wales Confirms Four While Scotland and Northern Ireland Remain Disease-Free
The United Kingdom has confirmed 54 cases of Bluetongue Virus Serotype 3 (BTV-3) since the start of the 2026–2027 vector season on 1 July 2026, according to the latest surveillance update issued by the Department for Environment, Food & Rural Affairs (Defra) and the Animal and Plant Health Agency (APHA). The figures comprise 50 confirmed cases in England and four in Wales, while Scotland and Northern Ireland remain free of the disease.
The updated figures reflect the seasonal increase in virus transmission as populations of Culicoides biting midges, the insect vectors responsible for spreading bluetongue, become more active during the summer months.
Devon and Somerset Among the Latest Affected Areas
Recent confirmed cases have been reported from Devon and Somerset, where sheep and cattle on affected holdings have shown clinical signs consistent with bluetongue infection. Official reports describe sheep exhibiting fever, lethargy, excessive salivation, swollen tongues, mouth ulcers, crusting around the muzzle, lameness and, in some flocks, deaths. Some affected cattle have also shown lameness, reddening around the muzzle and oral lesions.
Veterinary authorities note that only a small number of animals may be laboratory tested within a flock, even though additional animals can display compatible clinical signs.
Understanding Bluetongue Disease
Bluetongue is a viral disease of ruminants caused by the Bluetongue virus (BTV), an Orbivirus transmitted by infected Culicoides biting midges. It affects cattle, sheep, goats, deer and other domestic or wild ruminants but does not infect humans and poses no food safety risk.
Although cattle often develop milder disease, they can serve as important reservoirs for virus transmission. Sheep generally experience more severe illness, with outbreaks capable of causing significant economic losses through mortality, reduced productivity and movement restrictions.
Clinical Signs Farmers Should Watch For
Defra and APHA are urging livestock keepers to remain alert for symptoms including:
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High fever
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Mouth, tongue and lip ulceration
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Excessive salivation or drooling
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Swollen face or tongue
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Nasal discharge
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Lethargy and reduced appetite
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Lameness
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Reddening of teats and muzzle in cattle
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Increased deaths in sheep flocks
Any suspected cases should be reported immediately to the Defra Rural Services Helpline or the Animal and Plant Health Agency (APHA) to enable rapid investigation and laboratory confirmation.
Vaccination and Biosecurity Remain Critical
Defra continues to recommend vaccination with authorised BTV-3 vaccines where appropriate under current policy, together with practical measures to reduce exposure to biting midges. Recommended biosecurity measures include:
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Reducing standing water around livestock housing where feasible.
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Using insect screens and approved insecticides when appropriate.
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Housing susceptible animals during periods of peak midge activity where practical.
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Monitoring animals closely for early signs of disease.
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Maintaining accurate livestock movement records.
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Reporting suspected infections without delay.
Because bluetongue vaccines are serotype-specific, protection against one serotype (such as BTV-3) should not be assumed to protect against other serotypes.
Impact on Livestock Producers
Bluetongue outbreaks can have significant consequences for livestock businesses beyond animal health. Confirmed cases may trigger movement restrictions, surveillance requirements and additional testing, potentially affecting breeding programmes, livestock sales and export opportunities.
The disease is considered one of Europe’s most economically important vector-borne livestock diseases because of its impact on:
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Sheep production
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Dairy farming
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Beef cattle enterprises
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Breeding stock movements
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International livestock trade
