Although cases of Baker-Rosenbach eryripeloid were reported in Brazil 23 years ago by Sebastião Sampaio, followed by nine cases studied in 1951 by Lacas and Ancona Lopes, no other cases have been published after this. The author had occasion to study six cases of which three were studied and published in 1953. The remaining three, one in 1965 and two in 1967, are reported in this paper. The author reports the ubquity of Erysipelotrix rhusiopathiae and the variety of conditions in which man can infect himself especially according to determinde profissions. This gives the disease the typical character of a professional disease. it affcets the factory ernpleyees who work with buttons or usually handle tones, especially those of pigs or sheep, butchers, skinners, sausage makers. etc. Particularly vulnerable are those who work with the products of the sea: fishermen, handlers of crabs, shrimps, crustaceans and fish in general by the case with which they can hurt ihemselves and aeguire the infection through an occasional wound. The disease may atack numerous domestic and sylvatic animals with well defined clinical forms such as the pig '(erysipela of pigs), in the sheep (poliarthritis of sheep), in slaughter animals, in hawling animals, in domestic fow or rapine birds, rats and mice, and other numerous rodents. Hernatophagous flies and other insects have been found infected. It is never too mach to say that the products of the sea are a great source of humen infection. In man. the disease usually has a light course and is localized (erysipeloid) and in certain circumstances, can assume septicemic characteristics, such as in the pig: it can produce endocarditis as in the sheep, besides other clinical forms and complications. Sumarized in the text are the three cases presented before and detailed description is given on the three unreported cases which have a clinical history and evolution typical of erysipeloid. Dealing with a disease which has typical professional characteristis, it should be considered as such with respect to absence from work or other social implications. For this reason its exact diagnosis and documentation is necessary as certain clinical forms can lead to death. The indiscriminate use of antibioties before coming to a ãiagnosis is a habit which should be avoided in order that a better evaluation of the incidence can be made.