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ORIENTAL SORE
[CHAP.
inoculation. That it can be of much longer duration is equally certain. I have seen an unquestionable oriental sore which did not appear until five months after the patient had been exposed to any possibility
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/32/Tropical_Diseases_-_Fig_58.png/300px-Tropical_Diseases_-_Fig_58.png)
Fig. 58.—Oriental sore. (After Wenyon. From photo by R. McKay, reproduced in "Journ. Lond. School Trop. Med.")
of infection. Wenyon inoculated himself with oriental sore in Aleppo; it was not until six and a half months later that a leishmania-containing papule, subsequently developing into a sore, appeared at the site of inoculation. In other cases the incubation