There is one citation that IBD could be contagious, but it is weak at best. Therefore I'd carry on with the assumption upon which you entered this post in regard to IBD being contagious (although the original post dealt with AS). I'm still highly suspicious (regarding IBD) but lack proof.

IBD - Contagious


Kind Regards,
Jay

Almost all of us long for peace and freedom; but very few of us have much enthusiasm for the thoughts, feelings, and actions that make for peace and freedom. - Aldous Huxley

Was the government to prescribe to us our medicine and diet, our bodies would be in such keeping as our souls are now. - Thomas Jefferson