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April 13, 1935


JAMA. 1935;104(15):1333. doi:10.1001/jama.1935.02760150045013

Evidence that amebiasis may be water borne has recently become highly suggestive. As a result of the outbreak of amebic dysentery in Chicago in 1933, cross connections between water and sewer lines and defective piping have been, as pointed out by Magath1 and others, the source of surprising discoveries. Thus, as he says, direct and indirect cross connections between sewerage and water lines is so common that one might say it is universal. The existence of this situation, and the belief that massive doses of amebas are usually necessary for the development of human acute amebic infection, strongly suggest the water spread of most acute amebiasis.

Further evidence of water-borne amebiasis is offered in the recent report by Hardy and Spector.2 Following an extensive fire in Chicago in May 1934, many cases of acute diarrhea appeared followed in due time by typhoid. These occurred in both firemen and