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.
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The farming minister has said special immigration rules could be applied to seasonal agricultural workers after we leave the EU.
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