Carrion's Disease. II. Comparative Morphology of the Etiolog-ical Agent in Oroya Fever and Verruga Peruana.

Conclusions

Bartonella-filled cells were found in large numbers in nearly all organs of human Oroya fever cases, in cutaneous nodules from a febrile and non-anemic cases of verruga peruma, and in cutaneous nodules produced in monkeys by inoculation with human material from both of the above sources. The morphological identity of the organisms, and the essential identity of the patterns produced by them within cells in all of the above tissues furnish additional evidence that Oroya fever and verruga peruana have a common etiological agent, Bartonella bacilliformis.