The National Farmers' Union says it's vital that a vaccine for Schmallenberg virus is made available this year. The disease causes stillbirths and birth defects in sheep and cattle and is carried through insects.
It's spreading through the South West, with nearly 60 cases in Dorset and more than 50 in South Somerset.
More top news
The number of norovirus cases in the South West has risen dramatically, new figures have revealed
Your latest weather forecast with Bob.
Your latest forecast with Bob.