Exotic Vegetables Etc Mr. Brotherton asked the Secretary of State for Employment what is the cost to public fends of the special temporary employment scheme to grow exotic vegetables for the Asian community in Mr. John Morris Although the incidence of known cases of hydatid disease in humans in Wales as a whole is low, a high proportion of these cases has occurred in Mid-Wales. Because of difficulty in identifying the disease without thorough individual examination, it is not practicable to establish accurately all those suffering from it.