Defra's latest bluetongue update shows how quickly animal health becomes a resilience issue when insect activity returns. As of 21 April 2026, Great Britain had recorded 337 cases in the 2025 to 2026 bluetongue season, which began on 1 July 2025. Defra says 314 of those cases are in England and 23 are in Wales, while Scotland has recorded none. The English total includes 303 cases of BTV-3 only, four cases of BTV-8 only and seven cases where both BTV-3 and BTV-8 were found. In Northern Ireland, the Department of Agriculture, Environment and Rural Affairs has confirmed five BTV-3 cases. Defra's case map shows where premises have tested positive by PCR for BTV-3, BTV-8 or BTV-12, giving keepers a clearer picture of where infection has been found.

The latest confirmed cases underline why vigilance still matters even before warmer conditions fully build. On 21 April 2026, Defra confirmed two new BTV-3 cases in England after suspicious clinical signs were reported: one calf in East Sussex born with neurological signs and poor sucking reflex, and one calf in Derbyshire born with neurological signs and reduced sucking reflex. Earlier April updates pointed to the same pattern across the country. Defra recorded new BTV-3 cases in Wiltshire, West Sussex, Cornwall, Powys, Devon and Gloucestershire, with reports including blindness, facial deformities, convulsions, deafness, dummy calves and severe brain changes found at post-mortem. For livestock keepers, those details are not just clinical notes. They are practical warning signs that can help trigger faster reporting and reduce delay when a herd starts to show unusual births or weak newborns.

March brought more evidence that the disease is showing up through reproductive and neurological harm as well as obvious illness. Defra confirmed fresh BTV-3 cases in West Yorkshire, Lancashire, Hampshire, Cumbria and Staffordshire, and on 24 March 2026 it also confirmed a BTV-8 case in East Sussex after a late-term abortion or stillbirth. Taken together, the recent notifications show why bluetongue cannot be treated as a single-region event. Cases have been confirmed after farmers noticed blind calves, lethargic newborns, reduced feeding reflexes, fertility problems and stillbirths. The sooner those signals are reported, the better the chance of limiting losses and getting the right controls in place.

Defra says the midges that spread bluetongue became active again on 2 April 2026 as temperatures rose. Even so, experts still rate the risk of spread through midges as very low because it has not been warm enough for long enough for the virus to develop inside the insects. That assessment offers some breathing space, but it is not a reason to ease off. Defra still rates the overall risk of bluetongue entering by all routes as medium, and it warns that infection can still be passed through germinal products such as semen, ova and embryos. By contrast, the risk of airborne incursion is classed as negligible.

The policy response is now built around broad restricted zones rather than repeated local shutdowns. The whole of England is in a bluetongue restricted zone, and all of Wales has been under a country-wide restricted zone since 00:01 on 10 November 2025. In practical terms, animals can move within England without a specific bluetongue licence or pre-movement testing. Livestock can also move between England and Wales without bluetongue vaccination or other mitigation measures. Germinal products remain more tightly controlled. In England, a specific licence is needed to freeze semen, ova or embryos anywhere in the country, testing is required and keepers must pay for sampling, postage and testing. In Wales, donor animals must still be tested before freezing and marketing germinal products.

For farms, the most useful message in Defra's guidance is not panic but preparation. The department is urging keepers to stay alert for signs of bluetongue, report suspicions quickly, follow the latest BTV-3 vaccination advice and use on-farm biosecurity measures designed to slow spread. This is where the story shifts from disease response to farm resilience. Bluetongue follows vector activity, and vector activity changes with seasonal conditions. Farms that keep movement plans current, check zone maps before moving stock and act early when symptoms appear are in a far stronger position than those waiting for a formal restriction notice to force a decision.

Defra has also kept close control over routes that can carry longer-term risk. Guidance remains in place covering movements within the restricted zone, the general licences used for some movements to Scotland or Wales, the rules for moving, freezing and storing germinal products, and certain animal movements from Northern Ireland to Great Britain under licence. The smaller details matter too. Existing identification and movement rules still apply for cattle, bison, buffalo, sheep, goats and deer. For camelid keepers, including those with llamas and alpacas, Defra says the Animal and Plant Health Agency should be contacted if there is any doubt about the rules. Importers are also being told to check the latest requirements for animals and animal products before making plans.

There is important context behind the current numbers. Defra says the first BTV-3 case of the 2025 to 2026 vector season was confirmed on 11 July 2025. Before that, the department had confirmed 160 BTV-3 cases in England and two linked to high-risk moves in Wales between 26 August 2024 and 31 May 2025, alongside one BTV-12 case in England on 7 February 2025. Earlier still, between November 2023 and March 2024, England recorded 126 BTV-3 cases on 73 premises, the first UK BTV incursions for more than 15 years. That history explains why bluetongue is now being treated as an ongoing resilience issue for livestock farming rather than a one-off outbreak. The last confirmed UK outbreak before this period was BTV-8 in 2007 and 2008. The more hopeful lesson in Defra's current approach is that better reporting, clearer movement rules, practical communications and vaccination options give farmers more room to act before local animal health pressures become wider economic losses.