Re: keeping boa & python...
You can keep any species of snakes in the same room. If you're worried about spreading anything between snakes just wash your hands between handling each snake.
Re: keeping boa & python...
Ibd is transmited in the form of nasal and oral secretions as far as we know, however there still is very little known about the pathology of the virus. I would not risk it even though they probrably would never have contact.
Re: keeping boa & python...
Since wanting to get into boas, I ONLY purchase boas from breeders or keepers who also have ball pythons and have had both species for at least 6 months, longer if possible, and have not taken any new animals in. It really helps me with the IBD issue since ball pythons don't survive exposure longer than 30 days.