Hi w new to this site. Need some advice… i have been jv positive high titre levels for a year now, taking tysabri since 2017. I now have 3 monthly mri to monitor pml detection. I freak out everytime i have mri until i have mri results. Consultant recommends staying on tysabri, but i’m scared to stay on but also scared to make the shift to ocrevus incase k develop pml on the jump. Anyone else have this experience?