Vaccination Response in Tecfidera-Treated Versus Interferon-Treated Participants With Relapsing Forms of Multiple Sclerosis.

Inclusion Criteria

• •Must have a confirmed diagnosis of relapsing remitting MS per the 2010 McDonald criteria.
• •Must have a known tetanus immunization history with most recent tetanus vaccination given 2 to 15 years prior to Screening and an anti-tetanus serum immunoglobulin titer at Screening that is less than or equal to one-half the upper limit of detection for the assay.
• •Must have been on a stable approved dose of Tecfidera (240 mg twice daily \[BID\]) \[Group 1\] for ≥6 months or on a stable approved dose of a non-pegylated IFN (e.g., Avonex, Betaseron, Rebif, Extavia) \[Group 2\] for ≥3 months prior to Day 1.