It's covered in great detail even in the first chapters of the book.

It's mentioned briefly in the movie when the reverend mother tells Jessica they've done all they can.

I doubt the next movie will really even go into it except *MAYBE* having Paul scream something a few times in a single scene. It'd be kind of hard to explain in a strictly narrative movie.

The book is not about race it is about politics, trying to interpret it from a racial standpoint will lead to some very weird 'takes' on it.

I guess I forgot you can spoil a 50 year book.

I'll try to keep this in mind if they ever make a 2 part movie of "A Canticle for Leibowitz."