It seems like these IBD threads come in spurts, don't they? You won't hear any concerns for months and then you'll see 5-6 in a row.
Pete Kahl has the most extensive and ACCURATE information on this topic.
IBD
IBD Case Study
IBD Virus
In my opinion, I suggest that you read through the information at the provided links and follow strict quarantine procedures for at least 3 months. I keep a BP in my room FULL of Boas and he's 100% healthy. If I can do this with my 200+ Boas and keep a thriving and 100% healthy BP, you should be able to do the same if you follow the guidelines of proper quarantine before you introduce your Boa to your collection.
1- Quarantine for at least 3 months
2- Mite preventive during quarantine
3- Vet trip with full fecal exam and smear