Xiao Yujie did not witness this scene; otherwise, she would never have let Lv Zhong treat her husband.
The larvae of these Pathogenic Worms are smaller than the larvae of the Soul-Devouring Worms, they are only about the size of millet grains. They are soft, flesh-colored and wingless. Their physical abilities and agility are much less than those of the Soul-Devouring Worms. Their speed is probably a bit faster than a flea, but not much more. Of course, their speed is satisfactory when compared to ordinary insects.
These Pathogenic Worms have bodies with strong acid and corrosion resistance, they are not at all afraid of gastric acid inside the body of primates. This is one of their key adaptations enabling them to survive harsh environments.