Originally Posted by SallyC

There have been 12 new cases of PML, according to Biogen.

As of September, 92,200 MS patients are taking Tysabri. As of December 1, there have been 192 cases of PML. Of the patients with PML, 20% have died.

Thank you Agate for the update. We need to know this, so that we can make an informed decision on whether or not to take it.

The odds are still not bad, but any death is horrible.