Immunogenicity of the Recombinant Zoster Vaccine in Multiple Sclerosis Patients

In this monocentric study, we will assess the immunogenicity and safety of two doses of the adjuvanted recombinant Zoster vaccine (RZV, or Shingrix®) in Multiple sclerosis patients treated with anti-CD20 (ocrelizumab, group 1) compared to healthy controls (group 2). Participants will receive Shingrix® on Day0 and Day60; immunological response will be assessed on Day 0, 1, Day 60, 61, Day90 and Day360. Unsolicited Adverse events of special interest (AESI) will be collected throughout the study period; patients reported outcomes (PROs) will be declared for one week after each vaccination. Safety of MS patients will be monitored through EDSS scoring and MRI before and 1 month after vaccination (D90) and at day 180 and 360 (EDSS scoring only)