The greater attention which is being paid in recent years to the prevalence of intestinal parasites in man and to the statistics of their distribution will make it possible to decide to what extent certain general conclusions formed in respect to the zooparasitic diseases are tenable. Thus it is admitted that animal parasitism increases as we go from temperate to tropical climates; that all intestinal and some hepatic parasites appear to decrease hand in hand with the increased care devoted to the problem of latrines and sewers; that certain parasites are likely to be more common among persons who eat raw or rare meats, and that the incidence tends to be greater among persons of careless personal habits than among those exhibiting careful modes of life.
Some time ago we presented data1 regarding the percentage of persons, among the inhabitants of the Philippine Islands, infected with intestinal parasites. These
THE INCIDENCE OF CERTAIN INTESTINAL PARASITES. JAMA. 1915;LXIV(15):1249. doi:10.1001/jama.1915.02570410047027
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