JAMA. 1911;LVII(26):2071-2074. doi:10.1001/jama.1911.04260120261015.
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One of the most interesting diseases in South America is the one known as "verruca peruana" (verruga peruviana), fiebre de la Oroya, or "Carrion's fever," as it is called in Peru, in honor of Daniel Carrion, a young Peruvian who died as a result of his zealous attempt to determine the infectious nature of the malady which, although given the commonplace appellation of "wart," is a very serious and frequently fatal disorder.

Some knowledge of the disease is necessary to Americans, from the fact that American physicians have from time to time passed through the endemic region or have engaged in professional work in connection with some of the American commercial interests in Peru.

The disease is interesting from several points of view: to the parasitologist on account of the peculiar bodies in the erythrocytes, and on account of its probable transa peculiar by ticks or other suctorial invertebrates having


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