寄生虫的蔓延预示着不良卫生环境，所以灾民安置后期阶段应对卫生状况加以改善以解决肠道寄生虫问题，同时也有利于减少其它严重疾病的发生。
Because reinfestation after treatment is an indicator of poor sanitation, correction of sanitary deficiencies is likely to abate the parasite problem and other, more serious diseases.
寄生虫的蔓延预示着不良卫生环境，所以灾民安置后期阶段应对卫生状况加以改善以解决肠道寄生虫问题，同时也有利于减少其它严重疾病的发生。
Because reinfestation after treatment is an indicator of poor sanitation, correction of sanitary deficiencies is likely to abate the parasite problem and other, more serious diseases.
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