Dr Christianne Glossop, Wales's chief veterinary officer, says it's early days for a vaccine against Schmallenberg virus, but one is being developed.
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The former Cardiff South and Penarth parliamentary candidate joins Suzanne Evans, Paul Nuttall and Raheem Kassam in the race.
Cloud and outbreaks of rain across parts of south Wales today. Elsewhere, it'll be mostly dry with some brighter spells.
Leaders of Wales, Scotland and Northern Ireland meet in Downing Street for talks with Theresa May ahead of Britain's departure from the EU