JC positive

I got the results today, with my 1 year anniversary coming up on Tysabri next month. I love this treatment and I don’t want to have to change but I will have to. I don’t want to be immunosuppressed I’m worried about getting ill or the prolonged use and risk of cancer. Anyone else had this and would like to share their positive experience? I had to change medication this time last year I can’t believe I’m having to do it again.