The pathogenicity of some of the intestinal parasites has become the subject of more detailed study of late, owing, we believe, in part to the stimulus received from the current interest in all topics pertaining to tropical medicine, and in part to the newer discoveries respecting the biochemistry of these organisms.1 There is no species of animal and no race or class of man known to be free from parasites. The frequency of their distribution depends as a rule on certain features of the environment and the hygienic standards of the people. In general, animal parasitism increases from temperate to tropical climates; and all intestinal parasites decrease proportionately with the increase of care exercised in a proper system of latrines and sewers. The incidence of intestinal parasites in the Philippine Islands has been the subject of investigation by numerous workers since the American occupation.2 These studies, which have
SOME STATISTICS CONCERNING INTESTINAL PARASITES. JAMA. 1914;LXII(12):936. doi:10.1001/jama.1914.02560370044026
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