Record Bluetongue Outbreak Devastates UK Livestock as Cases Surge Past Three-Year Total
- British farmers are facing the worst bluetongue season on record during the 2026-27 monitoring period, with confirmed cases surpassing the total of the past three years combined as...
- The Department for Environment, Food and Rural Affairs (Defra) has recorded 2,201 premises with bluetongue cases during the season running from July 1, 2026, to June 30, 2027.
- Bluetongue is transmitted via biting midges and affects sheep and cattle, causing fevers, ulcers, swollen heads, nasal discharge, and lameness, with the tongue sometimes turning blue and protruding.
British farmers are facing the worst bluetongue season on record during the 2026-27 monitoring period, with confirmed cases surpassing the total of the past three years combined as the viral livestock disease spreads further north, theguardian.com reported.
Record 2,201 Cases Confirmed Across Great Britain
The Department for Environment, Food and Rural Affairs (Defra) has recorded 2,201 premises with bluetongue cases during the season running from July 1, 2026, to June 30, 2027. This total includes 1,103 cases logged in September alone. A further 1,112 potential cases remain under investigation across Great Britain, according to figures reported by oxfordmail.co.uk and fwi.co.uk. Devon has recorded 872 confirmed premises, Cornwall 250 and Somerset 156. Scotland has recorded 38 cases, including 34 in Dumfries and Galloway. The outbreak is driven by the serotype 3 (BTV-3) strain, which was first detected in England in 2023. Defra defines a case as any premises where at least one animal with bluetongue is present, meaning the total number of infected livestock is higher than the reported premises count.
Severe Symptoms and Rising Livestock Mortality
Bluetongue is transmitted via biting midges and affects sheep and cattle, causing fevers, ulcers, swollen heads, nasal discharge, and lameness, with the tongue sometimes turning blue and protruding. In the most severe cases, the animal can die. While the virus cannot be passed directly between animals and poses no threat to humans or food safety, its impact on farm animals is severe. Cattle experience drops in milk production, failed pregnancies, and birth defects, whereas sheep suffer higher mortality rates. Data from the National Fallen Stock Company supplied to fwi.co.uk show adult sheep collections rose 6.2% across England in August 2026 compared to the previous year, with dramatic spikes in heavily affected counties such as Devon, where collections surged 310% from 159 to 652.
Climate Change Spreads Virus While Vaccine Supply Strains
Academics link the northern spread of the virus to climate change, noting that warmer temperatures enable midges to survive and the virus to replicate further north, with the disease crossing into Scotland and reaching Aberdeenshire this summer. Robyn Munt, vice-president of the National Farmers’ Union, told theguardian.com that obtaining vaccines has been a challenging demand-led process while farmers simultaneously manage drought costs and increased labour pressure. In Cornwall, Councillor and farmer Adrian Parsons told hellorayo.co.uk that in 25 years of farming he has never experienced such a traumatic outbreak, noting that surviving rams are showing reduced fertility that will impact future breeding cycles. Hook Norton Farm Vets noted in a statement reported by oxfordmail.co.uk that while local reports have decreased, warm and humid conditions mean midge activity remains an ongoing risk.
Restricted Zones Remain as Breeding Impacts Loom
All of England, Wales, and the southwest of Scotland remain under bluetongue restricted zones, and it is a legal requirement for farmers to report suspected cases to the government. Phil Stocker, chief executive of the National Sheep Association, told fwi.co.uk that the full impact of BTV-3 may become apparent next spring through reduced breeding ewes, lower ram fertility, and potential abortions. Tom Cantillon, a senior analyst at the Energy and Climate Intelligence Unit, told theguardian.com that adequate preparation including livestock vaccination is necessary, but warned that outbreaks will continue to increase until emissions are reduced to net zero.
Farmers Describe Traumatic Experiences with the Disease
Farmers described the experience as traumatic
and stated, I’ve never seen anything like it.
One farmer noted, You’d go out each day, you’d never really know quite what you were going to find,
adding, Poorly sheep, the odd dead sheep.
Another farmer described it as a Quite a traumatic time, really.