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Article
August 11, 1900

THE EPIDEMIOLOGY OF MALARIA.

JAMA. 1900;XXXV(6):361. doi:10.1001/jama.1900.02460320031012
Abstract

Existing evidence leaves no room for doubt that malarial fever is conveyed by mosquitoes; but it is not impossible that, in accordance with earlier conceptions, the disease may likewise be transmitted not only by air, but also by water. Demonstration of the one mode of infection does not necessarily preclude the possibility of the others. The matter is one not solely of scientific interest, but it has a most important prophylactic bearing, inasmuch as we can not hope to prevent the disease unless we appreciate all of the sources whence it may be derived, and take the necessary steps for their suppression. From a study of the sanitary reports of two army corps garrisoned in eastern provinces of Prussia, between the years 1884 and 1888, Grawitz1 found that the largest number of cases of malaria were observed not in the late summer and autumn, as is generally believed, but

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