Vaccine-generated Immunity in Ocrelizumab-treated Patients: Longitudinal Assessments (VIOLA)

Severe acute respiratory coronavirus 2 (SARS-CoV-2) is a novel coronavirus and the causative agent of COVID 19 disease, whose presentation symptoms range from asymptomatic infection to mild flu-like symptoms to multi system failure and death, resulting in significant morbidity and mortality worldwide. Novel vaccines against the SARS-CoV-2 virus have very recently been developed; however, the effectiveness, immune response, and short- or long-term safety of these vaccines have not been tested in immunocompromised patients on anti-CD-20 therapy for multiple sclerosis (MS) or for other disorders. This study will examine the immune response of the Pfizer-BioNTech and Moderna messenger RNA (mRNA)-platform vaccines developed against SARS-CoV-2 virus given as standard of care (SOC) in MS patients on ocrelizumab.