Since the publication in 1914 of McEwen's1 paper entitled "Oriental Sore in the Americas," there has been a good deal of discussion regarding the type of leishmaniasis in the New World. Many investigators are now convinced that it differs sufficiently from the oriental sore of the Old World to warrant its being classed as a separate though closely allied disease. In recent years an extensive literature on American leishmaniasis has appeared, including more or less exhaustive monographs by Laveran,2 Escomel3 and Inchaustegui.4 My object in this report is to point out differences between the forms of leishmaniasis mentioned and to cite some personal observations made during a recent trip to Brazil.
I am not concerned here with the visceral type of leishmaniasis known as kala-azar and caused by Leishmania donovani. I am interested at present only in the types of leishmaniasis that affect the skin. The
FOX H. AMERICAN LEISHMANIASIS: REPORT OF CASES OBSERVED IN BRAZIL. Arch Derm Syphilol. 1931;23(3):480–502. doi:10.1001/archderm.1931.03880210073007
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