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Re: dewophile post# 85495

Thursday, 10/29/2009 8:40:52 AM

Thursday, October 29, 2009 8:40:52 AM

Post# of 252527
The risk for JC viral reactivation due to long-term use of Tysabri is much higher than for becoming newly infected. Therefore, the tests are aiming to screen for the presence of the virus itself or for signs of its reactivation. I haven't seen any data on IgM/acute phase, but perhaps we'll see them in the future as this is being studied recently just like the reactivation issue:

http://content.nejm.org/cgi/content/abstract/361/11/1067

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