Coughing and fever are symptoms of a cold; bloodshot eyes can be explained by a prolonged lack of rest.
But excessive hunger is not.
However, Ethan can understand the diagnosis given by the doctors in Dark Furnace City. After all, the transmission characteristics of the ghoul virus are extremely harsh; you either have to have eaten human flesh or been bitten and scratched by a ghoul. In the latter case, going to the Life Divine Teachings to purify the wound immediately can effectively prevent the spread of infection.
Demon Hunter August mentioned in the book that the purification techniques of the Life Divine Teachings can effectively dispel infections from dark creatures, having a very significant suppressive effect on the ghoul virus, werewolf virus, and vampire plague.
But it was their first night in Dark Furnace City, and they had not suffered any attacks from ghouls.
"I asked the hospital's former clergy to perform purification techniques on me, but... it didn't improve."
