Risk of Getting COVID-19 in People With Multiple Sclerosis: A Case-Control Study.

The multivariable Poisson regression model revealed older age, a progressive course, and the presence of comorbidities (even if the latter did not reach statistical significance) as being the most important factors associated with a higher risk of severe course of COVID-19, whereas interferon beta treatment and no treatment were associated with a lower risk of infection, as previously reported. 4 , 5 , 7 We did not confirm the association between a severe COVID-19 outcome

also in 111,027 other papers