Estimating Prevalence of COVID-19 Infection and SARS-CoV-2 Antibodies in MS Patients With and Without Ocrelizumab Treatment, and Comparing Immune Responses to COVID-19 in MS Patients on Ocrelizumab and Healthy Controls

This non-interventional, biospecimen collection study is designed to help us better understand whether MS patients have impaired immune defenses to COVID-19 infection. The potential influence of immune modulating medications for MS will be considered through these exploratory studies. This study is also designed to provide context for interpretation of anti-SARS CoV2 serologies in MS patients during convalescence from COVID-19 infection.