Medical Department of the United States Army in the World War (The Official History Series for World War I), Volume IX: Communicable and Other Diseases [open html - 44KB]
"The subject matter of this volume, which, for the most part, comprises the more important communicable diseases that concerned the Army and particularly the Medical Department during the World War, is arranged so as to consider, first, a statistical analysis and then the usual aspects of each of the diseases (diagnosis, treatment, etc.). In so far as the statistical analysis is concerned, a dichotomous table for each disease, or group of diseases comprising a chapter, forms a basis for subsidiary tables where these have been thought desirable. The basic tables show, for purposes of analysis, strength, and admissions, deaths, and noneffectiveness, not only in absolute numbers but also in rates per 1,000 strength. In addition, the incidence of the diseases considered is given geographically and by race. Where it is desirable, additional tables show urban and rural distribution; local prevalence, as in a large command or at a particular station; comparative incidence of certain diseases in the United States Army and in foreign armies."
U.S. Army Medical Department, Office of Medical History: http://www.history.amedd.army.mil/
Siler, Joseph F. (Ed.). Medical Department of the United States Army in the World War (The Official History Series for World War I). Washington, D.C.: U.S. Army Surgeon General's Office, 1928. v. IX