evidence: Miller AE, Morgante LA, Buchwald LY, Nutile SM, Coyle PK, et al. A multicenter, randomized, double blind, placebo-controlled trial of influenza immunization in multiple sclerosis. Neurol 1997;48;312-314. [...] Reviewed by Paul A. Offit, MD, and Lori Handy, MD, MSCE, on September 11, 2018