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This presents an excellent study of survey and diagnostic methods for all the protozoa found in the human intestinal tract. The scope of the study is described in the preface. The author aims "to determine the effectiveness of different examination methods and to find a system of presenting results which would make it possible to compare figures obtained in different surveys." Also she investigated "how certain living conditions among different groups of people influence the spread of intestinal infections in general, using the frequency of intestinal protozoa as an index." No study of pathogenicity or clinical features is attempted. The study is carefully limited to persons showing no evidence of intestinal disorder. This limitation may possibly invalidate the author's general conclusions. An excellent historical and biologic summary covers the entire group of intestinal protozoa. Some may question minor selections of technic, as, for instance, the routine use of magnesium sulfate
Studies on Human Intestinal Protozoa Especially with Regard to Their Demonstrability and the Connexion Between Their Distribution and Hygienic Conditions. JAMA. 1937;109(17):1390. doi:10.1001/jama.1937.02780430068034
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