Although milkers' nodules is apparently an uncommon occupational disease in the United States, there is some reason to believe that many cases of this unique disorder are unrecognized and that the actual incidence is higher than is suggested by the number of cases recorded in the literature. Since Becker1 first described milkers' nodules in four residents of northern Minnesota and Wisconsin, others have reported finding the disease in Delaware, Louisiana, Illinois, and in other sections of the Midwest, East, and South. According to Cawley, Whitmore, and Wheeler,2 a total of 20 cases have been reported in the United States to date.
Milkers' nodules is a virus disease of the skin that is usually acquired by man as the result of milking cows whose udder and teats have been affected by false cowpox, as distinguished from vaccinia. Material from milkers' nodules reveals virus-like corpuscles which differ in size and