“Be vigilant for signs of bluetongue and report it if you suspect it,” Defra and the Animal and Plant Health Agency are telling keepers, and after the latest positive case in South Yorkshire that warning will land hard across northern livestock country. For farms in Yorkshire, Cumbria and Derbyshire, this is not a distant government bulletin. It is a live issue for calving sheds, vet visits and day-to-day business decisions. (gov.uk)

The official tally, updated on 29 May 2026, says there have been 343 cases of bluetongue in Great Britain since 1 July 2025. Defra’s breakdown puts England on 320 cases, including 308 BTV-3 only, 4 BTV-8 only, 7 with both BTV-3 and BTV-8, and 1 case where the serotype is unknown; Wales is on 24 BTV-3 cases, Scotland has no confirmed cases, and Northern Ireland has 5 confirmed BTV-3 cases. (gov.uk)

The newest English case was confirmed on 29 May, with one cow in South Yorkshire testing positive for BTV-3 after a sudden milk drop, while other cattle on the holding were aborting and calving prematurely. A day earlier, Wales recorded a case in Ceredigion after the birth of a dummy calf, and the calf also tested positive. (gov.uk)

Readers in the North West and East Midlands will notice this has not been confined to one pocket. Cumbria recorded an aborted calf with brain deformities on 30 April and a stillborn calf with brain deformities on 1 May, while Derbyshire saw a calf born with neurological signs and reduced sucking reflex on 21 April. That pattern is why vets keep stressing abortions, stillbirths and congenital problems as warning signs, not just the textbook picture in adult animals. (gov.uk)

Defra’s latest assessment says the risk of bluetongue incursion from all routes remains medium. Warmer weather matters here: the midges that spread the virus became active again on 31 March 2026, officials say, and temperatures are now high enough for the virus to develop inside the insects, meaning onward transmission is possible. Animals can also be infected through semen, ova or embryos. (gov.uk)

The movement picture is easier to follow than it was a year ago, but it still needs attention. The whole of England is in a bluetongue restricted zone, which means animals can move within England without a specific bluetongue licence or pre-movement testing. Wales has been under an all-Wales restricted zone since 00:01 on 10 November 2025, and livestock moving between England and Wales no longer need bluetongue vaccination or other mitigation measures. Germinal products are where the rules stay tighter, with testing and licensing still in place. (gov.uk)

Vaccination has become part of the ordinary farm conversation. GOV.UK says there are three authorised BTV-3 vaccines in the UK - Bluevac-3, BULTAVO 3 and Syvazul BTV 3 - and while a vet must prescribe them, keepers can give the vaccine themselves. In England, Wales and Scotland, vaccinations must be reported within 48 hours and records kept for at least five years. (gov.uk)

The official signs list will feel uncomfortably familiar to anyone who has had a rough spring calving block: milk drop, abortions, foetal deformities, stillbirths, lethargy and crusting around the nostrils and muzzle are all on it. Defra also warns that adult cattle may carry infection for several weeks while showing little or no obvious illness, which is one reason this disease can sit quietly until losses start mounting. (gov.uk)

There is one point worth spelling out amid the worry. Defra says bluetongue does not affect people or food safety, but outbreaks can bring lengthy animal movement and trade restrictions. In practice, that means this is not only a veterinary story for places such as South Yorkshire, Cumbria, Derbyshire and west Wales; it also reaches marts, haulage and breeding plans. Defra says the first BTV-3 cases of the current vector season were confirmed on 11 July 2025, and that the earlier 2023 to 2024 detections were the first UK incursions for more than 15 years, with the previous outbreak running across 2007 and 2008. (gov.uk)