JAMA. 1901;XXXVI(7):446-447. doi:10.1001/jama.1901.02470070032003.
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The belief is growing that insects are important, even essential factors in the etiology of certain diseases. That malaria is inseparably connected with a mosquito that acts as an intermediate agent in the dissemination of the disease, has been proved definitely by suitable experiments, and the mosquito theory of malaria is in accord with the epidemiologic facts of the disease. Certain observations in the American typhoid camps of the Spanish-American War have brought the fly to the fore as a probable and dangerous carrier of typhoid fever. For some time past great interest has been taken in the etiology of yellow fever, and since the recent studies of Reed, Carroll and Agramonte on the rôle of the mosquito in this disease,1 additional data have been awaited with much eagerness. Important additional evidence of the etiologic importance of mosquitoes— Culex fasciatus, Fabr.—in yellow fever is given in the paper presented by


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