what was the all of the symptoms, feelings, and progression of the disease as it struck Monet.

From the text:

"On the seventh day after his New Year's visit to KitumCave--January 8, 1980--Monet felt a throbbing pain behind his eyeballs."

"The headache grew worse. His eyeballs ached, and then his temples began to ache, the pain seeming to circle around inside his head. It would not go away with aspirin, and then he got a severe backache."

"...on the third day after his headache started, he became nauseated, spiked a fever, and began to vomit. His vomiting grew intense and turned into dry heaves. At the same time, he became strangely passive. His face lost all appearance of life and set itself into an expressionless mask, with the eyeballs fixed, paralytic, and staring. The eyelids were slightly droopy, which gave him a peculiar appearance, as if his eyes were popping out of his head and half-closed at the same time. The eyeballs themselves seemed almost frozen in their sockets, and they turned bright red. The skin of his face turned yellowish, with brilliant starlike red speckles. He began to look like a zombie."

"His personality changed. He became sullen, resentful, angry, and his memory seemed to be blown away."

"He was not delirious. He could answer questions, although he didn't seem to know exactly where he was."

"He could still walk..."