Not sure if this helps much but I think I remember someone posting awhile back how someone stopped by their house... handled their snake and that snake along with the others came down with IBD. Turns out the person who came over had brought their snake to the vet that same day bc it had IBD... Is it possible that you handled your new boa... didnt wash ur hands or what not... then went on to the ball room and messed with your female and/or male?