UK Bluetongue virus outbreak 2026

In early August 2026 the United Kingdom reported a sharp rise in Bluetongue virus (BTV‑3) cases. On 3 August, officials recorded 84 new outbreaks—81 in England and three in Wales—far exceeding the previous year’s totals and prompting urgent biosecurity advice and vaccination recommendations for cattle and sheep.

Two days later, the tally had climbed to 134 confirmed cases across cattle, sheep, goats and camelids. The surge spurred an accelerated vaccine response, with Boehringer Ingelheim working with Defra and the Veterinary Medicines Directorate to fast‑track regulatory approval and increase vaccine supplies. Irish authorities also noted the uptick in England and urged continued vigilance.

By 5 August, Devon accounted for 64 of the 134 cases, with sheep farms reporting significant losses, including eight deaths on a single flock. Warm weather has prolonged the activity of the biting midge vector, raising transmission risk. Devon County Council convened an urgent meeting, reviewing support measures while Defra continued funding diagnostic testing. Authorities are pursuing additional vaccine deliveries and exploring eco‑friendly midge controls such as the fungus Metarhizium. Movement between England and Wales remains unrestricted under existing zones, but testing and vaccination guidance have been intensified, and small‑scale vaccine availability remains a concern for farmers.

Overall, the situation has progressed from an initial surge in England and Wales to a broader, multi‑species outbreak with heightened vaccination efforts, cross‑border monitoring, and emerging regional impacts.