The amount of virus measured in the aerosol was small -- about 0.02 percent of the total virus load that was spewed -- but the researchers said that even that small amount can contain thousands of individual viruses.

在气溶胶中测得的病毒量很小——约占喷出的病毒总量的 0.02%——但研究人员表示，即使是这么少量的病毒也可能包含数千种病毒。