Patient(56) SARS-CoV-2(45) COVID-19(42) coronavirus(37) acute respiratory syndrome(33) multiple sclerosis(29) Multiple(27) Infection(26) correlated(26) patients(25) Evidence(24) coronavirus disease(24) sclerosis(23) Symptom(22) response(20) therapy(20) respiratory(20) neurologic(20) receiving(19) vaccination(19) association(17) CNS(17) evaluated(17) classification(16) were measured(16) class(16) provide(16) Immunoglobulin(15) Treatment(15) exhibited(15)