“…Yersinia enterocolitrica, a gram-negative aerobic bacterium, is a member of the family Enterobacteriaceae, as are Salmonella, Escherichia coli and Shigella. In Scandinavia and France it is well known that Yersinia enterocolitica causes abdominal pain, diarrhea, fever, arthritis, and cutaneous mainfestations such as erythema nodosum or erythema multiforme, as does Yersinia pseudotuberculosis (1,2). Recently, human Yersinia infections have been reported from many countries throughout the world, i.e., Europe, North America, Africa and Asia (3,4).…”