Thanks for the chapter!
That guy isn't suffering from ghoul's disease, but extreme dehydration and untreated psoriasis! Just make him drink a gallon of water, soak in a tub, and apply several tubes of cream and he'll be good as new! Sure the brain damage, violent tendencies, and craving for human flesh is permanent but nobody's perfect, right?
Seriously though, I'm curious as to how a sample from that final stage ghoul is suppose to help him come up with a cure or treatment. Granted as a vet he's got experience with diseases but if it was that easy C19 would be over with.