A virus affecting cattle, sheep and goats has been detected for the first time in Wales, officials have confirmed. Schmallenberg virus antibodies have been discovered in three cows and one calf on premises in Ceredigion.
The virus produces fever, diarrhoea and loss of milk production in adult cattle, though animals recover. It is thought to pose no risk to humans, but the Farmers' Union of Wales described the outbreak as "very concerning".
The union said the history of the affected animals suggested they were infected while on the holding in Ceredigion up to a year ago. The virus is thought to be carried by midges.