Holding the Night Demon Parasite Bug Egg in his hand was almost like holding a glass bead, but as soon as he stuffed it into a zombie's mouth, it instantly melted and turned into something resembling black snot, burrowing down the zombie's throat.
Hehe——
Some zombies let out a roar, seemingly a bit uncomfortable.
Other zombies, however, showed no change, as if they felt nothing at all.
Wang Tao carefully observed and noticed that the HP bars above the zombies' heads did not show any status change. This meant he couldn't determine whether they were parasitized or know the exact timing for their transformation into Night Demons.
This made Wang Tao even more cautious because it meant if a human were parasitized, he would not be able to tell either.
However, the description of the Night Demon Parasite stated that results would show within seven days after parasitism. If nothing happened after seven days, it was clear that the parasitism had failed.
