In nightmarish proportions, a common bedbug appears poised for a blood meal, compliments of a humanhost.
一只有着噩梦般形状的普通臭虫正准备开始一顿鲜血大餐，向人类主人表示致意。
2
The intensity of transmission depends on factors related to the parasite, the vector, the humanhost, and the environment.
传播严重程度取决于寄生虫、病媒、人类宿主和环境等有关因素。
3
They will also collaborate with researchers at the University of California in San Diego to study other pathogens that require a humanhost, such as malaria.