PREVALENCE OF TYPHOID FEVER IN THE UNITED STATES
Judging by obtainable figures, there are in the United States comparatively few communities of over 1,000 persons which during any period of twelve consecutive months within the past ten years have been entirely free from typhoid fever. The extensive prevalence of this thoroughly preventable disease in our country as a whole is beginning to be justly considered a national disgrace.Communities, like individuals, seem to be as a rule unable to profit by the experiences of others, and the history of typhoid fever is replete with instances of communities having failed to carry out clearly indicated preventive measures until the occurrence among them of severe epidemics has caused an awakening.
NATURE AND SOURCE OF THE INFECTIOUS AGENT
At present the generally accepted view is that typhoid fever is an infectious disease caused by a specific parasitic organism, the typhoid bacillus. The undetermined elements in the
LUMSDEN LL. EPIDEMIOLOGIC STUDIES OF TYPHOID FEVER. JAMA. 1909;LIII(16):1257–1264. doi:10.1001/jama.1909.92550160001001c
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