美国研究人员开发出一种廉价的疗法:用转基因益生菌发酵而成的纳豆来治疗钩虫感染。动物实验已表明其安全有效。钩虫是一种嗜血性肠道寄生虫,可使感染者出现贫血等症状,感染钩虫的儿童还会营养不良、体智发育迟缓等。世卫组织统计,包括中国在内全球有约7.4亿人感染钩虫。目前治疗人类钩虫感染的药物,最初是为治疗牲畜肠道寄生虫而研发的,效果不是特别理想,而且在非洲、东南亚一些地方还出现了抗药性问题,改进疗法已 American researchers have developed a cheap cure for hookworm infections using natto, a fermented probiotic bacterium. Animal experiments have shown that it is safe and effective. Hookworm is a haemophilic intestinal parasites that can make people infected with anemia and other symptoms, children infected with hookworm malnutrition, mental retardation and so on. According to WHO statistics, about 740 million people worldwide are infected with hookworms, including China. The current treatment of human hookworm infections was initially developed for the treatment of intestinal parasites in livestock and the effect is not particularly satisfactory, and drug resistance problems have also emerged in some parts of Southeast Asia, including improved resistance