This study will be a two-center, randomized, double-blinded, placebo-controlled trial. A single dose of Hepatitis B vaccine will be administered to subjects. CC-5013 or placebo will be administered for 7 days prior to and 7 days after the vaccine. Collection of samples for immune analysis will be performed prior to the initiation of CC-5013 administration, at the time of vaccination, and 7, 14, and 28 days after vaccination. Safety assessment will be performed at each visit.