Pregnant ewes on a farm in Wiltshire, England. Farmers across Europe are on the lookout for signs in their flocks of Schmallenberg disease, a virus that can result in congenital disorders and stillbirths when infection takes place during the early stage of pregnancy. In Ireland, cases have been reported on 76 farms,  but the number of farms affected is thought to be much higher. Photograph: Getty

Not many Irish people are familiar with a German town called Schmallenberg, but it has been on the lips of many sheep and cattle farmers since (...)