"Can I assume that these monthly posts are now self-explanatory?"
"It now looks like the risk of getting PML on Natalizumab is decreasing with time; i.e. if you get over the first 3 years the risk seems to be getting lower. I have asked Biogen-Idec to make a detailed PML risk calculator so that we can plug in all the variables including time on treatment and get out an individual risk based on duration of treatment. I have not heard back from them yet. Do you think this will be helpful?"