EddieF, I hope somebody will reply to your question.

There has been some additional information on the PML cases:

The chefarztfrau Website, which seems to have access to internal sources, is listing 3 more PML cases:

#80 - Female, 29 months on Tysabri, Germany
#81 - Female, 34 doses of Tysabri, USA
#82 - Male, 50 doses, Poland

There is added information for cases 75-79:

#75 - Female, 33 months on Tysabri, Germany
#76 - Female, 49 doses of Tysabri, Hungary
#77 - Female, 49 doses, USA
#78 - Male, 25 months on Tysabri, Germany
#79 - Female, 24 months on Tysabri, Australia

http://chefarztfrau.de/?page_id=716