Thinking more about this, and this is PURELY conjecture, but one avenue that SHOULD be investigated is whether the Avonex recall that happened in June of last year could have any connection to the PML cases?
I've had the same thought and share your conjecture. I quite agree that this must
be investigated. I took a number of Avonex injections that were recalled. I was never notified by Biogen of that recall. Biogen did notify me however of the Tysabri suspension. I found that rather odd since I wasn't in the trial nor on Tysabri, but I am on Avonex.
At this point I don't think anyone knows if it was the Tysabri, the Avonex, or the combination of Tysabri and Avonex. Just because these unfortunate events took place in the Tysabri + Avonex trial doesn't mean "the combination" itself is the culprit here.