人体十二指肠钩虫一般由感染性幼虫钻入皮肤或被吞食而感染。Schad等1980年8月在美国寄生虫学会55届年会上提出了第3个可能的感染途径。他们未能建立十二指肠钩虫感染的仓鼠和猪的动物模型,但发现经口进入动物体内的幼虫能够移往这些异常宿主的肌肉内生存。给家畜、家禽饲以不同数量的幼虫后,除10鸡外,计有小牛1只、 Human duodenal hookworms are generally infected by infectious larvae bored into the skin or swallowed. Schad et al. Proposed a third possible route of infection at the 55th Annual Meeting of the American Society for Parasitology in August 1980. They failed to establish animal models of hamsters and pigs infected with hookworms in the duodenum but found that larvae that entered the animals orally were able to migrate to the intramuscularly viable hosts. To livestock, poultry fed a different number of larvae, in addition to 10 chickens, the calf 1,