Cairax can survive the Ex virus longer than humans, Maxwell is still in control

“Where? Back to the shore, back to the sand. While we fritter away time here the contagion continues to spread. We need every hand fighting it for as long as they can and I have, if you will pardon the phrase, an appetite for destruction. If we are all lucky, being in this skin may give me several days, perhaps weeks, to rip and shred.
No, no, my dear little doctor. You are perfectly safe. I may look like a monster, but I am still Maxwell Hale inside this skin. I would never harm another human being.
Very well. I would never deliberately harm another human being. Is that better?”

Excerpt From Ex-Heroes, pg 322-323
Peter Clines
https://books.apple.com/us/book/ex-heroes/id585738407