Hygienic Laboratory workers conducted an investigation of typhoid fever in the District of Columbia

Between 1884-1895, Milton J. Rosenau, Leslie L. Lumsen, Joseph H. Kastle and other Hygienic Laboratory workers conducted an epochal investigation on the origin and prevalence of typhoid fever in the District of Columbia which became the catalyst for later, broader epidemiological studies.

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Source: National Institutes of Health
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