Yes, that's not easy knowing that you responded well to meds but developed antibodies - and that your GI could have made a better decision to prevent it
I know we can't expect them to be perfect but there have been studies...I feel your frustration. I've been there with doctors who didn't make great decisions over my treatment and we live with the consequences. Do you feel more confident in your new GI?
Are you having any bloods or fecal calprotectin before August to give you an idea about disease activity sooner?
I understand your concerns about Entyvio too - it does sound like we don't need to worry about PML with Entyvio but it's not easy not worrying! I find myself put off by the experiences I read about - the abdominal pain that people experience and also that it doesn't seem to have an amazing success rate. But I guess it's working in a different way and for some people that will be the right way! And also we use what we have available and since for a lot of people it's their last available med then it's a good thing.
Since you responded well to anti-TNF alpha meds previously, Cimzia sounds like a logical next step.
If you do start Cimzia and don't want to be on Imuran, then methotrexate might be a better option for you, for a short time at least. I believe that some studies show that the priming benefit that you talk about only requires six months of concurrent immunosuppressants at the start of biologic therapy.
There is a list of doctors in the US who prescribe anti-MAP antibiotic therapy...and a few people on the forum who have started. If none of them are near to you and if you can find a GI who will agree then one of those doctors might be prepared to advise on your treatment. You can see the doctors listed on crohnsmapvaccine.com
here.