COVID-19 and multiple sclerosis: A description of two cases on alemtuzumab.

Abstract Background Alemtuzumab is a treatment for highly active multiple sclerosis (MS). Immunosuppression is considered a risk factor for SARS-CoV-2 infection and there is still lack of evidence to guide MS practice. Methods/results We describe the clinical and immunological evolution of two MS patients under alemtuzumab treatment who were affected by COVID-19, one of them only one week after receiving her last dose, and both recovered without sequelae. Conclusion In selected patients (young, without comorbidities, and with high activity), MS itself could be more dangerous than COVID-19, so we should consider continuing MS treatment as previously planned, including alemtuzumab.