"Uh huh..." Well, that explains the cultist robes and cage. Of course, his companion could be talking about curing people instead... The first assumption seems more likely.

Dr. White doesn't understand why anyone would want to become an omnipotent immortal whatever, though...

"That's a twist!" He attempts to refocus on the old blood. "A plague that actually cures people at first. Gotta wonder how long it took for people to start becoming mindless savages?"