Handbook of medical entomology . r, the fight against sleepingsickness, like that against malaria and yellow fever, becomes pri-marily a problem in economic entomology. The minutest detailof the life-history, biology, and habits of the fly, and of its parasitesand other natural enemies becomes of importance in attempts toeradicate the disease. Here we can consider only the general featuresof the subject. 2i8 Arthropods as Essential Hosts of Pathogenic Protozoa Glossina palpalis lives in limited areas, where the forest and under-growth is dense, along the lake shore or river banks. According to
Handbook of medical entomology . r, the fight against sleepingsickness, like that against malaria and yellow fever, becomes pri-marily a problem in economic entomology. The minutest detailof the life-history, biology, and habits of the fly, and of its parasitesand other natural enemies becomes of importance in attempts toeradicate the disease. Here we can consider only the general featuresof the subject. 2i8 Arthropods as Essential Hosts of Pathogenic Protozoa Glossina palpalis lives in limited areas, where the forest and under-growth is dense, along the lake shore or river banks. According toHodges, the natural range from shore is under thirty yards, thoughthe distance to which the flies may follow man greatly exceed this. It is a day feeder, a fact which may be taken advantage of ina^•oiding exposure to its attacks. The young are brought forth aliveand full-grown, one every nine or ten days. Without feeding, theyenter the ground and under favorable conditions, complete theirdevelopment in a month or more. >-tt. ;.:i.: -lk:.!-;s concentration camp in Ci(ominission. jf German Methods of control of the disease must look to the preventionof infection of the flies, and to their avoidance and the first line, much was hoped from temporary segregationof the sick in regions where the fly was not found. On the assump-tion that the flies acted as carriers only during the first two or threedays, it was supposed that even the fly belts would become safewithin a few days after the sick were removed. The problem wasfound to be a much more diffictdt one when it was learned that aftera given brief period the fly again became infective and remained sofor an indeterminate period. Nevertheless, isolation of the sickis one of the most important measures in preventing the spread of Sonth American Trypanosomiasis 219 the disease into new districts. Much, too, is being accompHshedby moving native villages from the fly belts, ( fig. 137.) All measures to avoid t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1915
