More Tysabri Patients Turn Positive for JC Virus Antibodies

Stuart SchlossmanMarketing

In an analysis of prospective data from two cohorts — one in Germany, one in France — JC virus antibody seroconversion from negative to positive occurred at rates of 10.3% and 8.5% per year, respectively, Heinz Wiendl, MD, of the University of Muenster in Germany, and colleagues reported online in Neurology: Neuroimmunology & Neuroinflammation.

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