1、Viruses do not loose their infectivity following their adsorption to a solid particles.
病毒吸附到固體顆粒上后并不喪失它們的感染力。

2、The least potent bugs inhibited the virus' infectivity by 6.7 percent;
效力最小的可以抑制細菌6.7%的傳染性；

3、Objective to explore the way of fast control of schistosome infectivity in susceptible zones.
目的探討快速控制血吸蟲病易感地帶感染性的方法。

infectivity翻譯