Presumably, the vaccine worked by inducing the immune system to neutralize naturally entering parasites before they escaped an hour later to their next way station, the liver.

• 可以想见的是疫苗诱发了免疫系统，然后中和了进入人体的寄生虫，因而防止疟原虫在一个小时之后进入下一站：肝脏。