Wales' chief veterinary officer says it is possible that some cattle were infected with the Schmallenberg virus (SBV) and therefore anticipates "calving problems later in the year as a consequence."
Dr Christianne Glossop says since the first clinical case of the disease in Wales in November last year there have been a further 11 positive cases of SBV in sheep.
Dr Glossop is encouraging farmers to be vigilant for signs of the disease and to seek swift veterinary assistance if they have any concerns.
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