The responder rates ( odds ratio ; 95 % confidence interval ) for influenza vaccine ( fingolimod vs placebo ) were 54 % vs 85 % ( 0.21 ; 0.08-0 .54 ) at 3 weeks and 43 % vs 75 % ( 0.25 ; 0.11-0 .57 ) at 6 weeks postvaccination .