Can I use #Rituximab during #pandemic? Ritux blunts response to #SARSCoV2 #vaccine LB0003 & worse outcomes vs other Rheum meds (also pred) from Global Rheum Alliance OP0006 but pts on Rituximab have worse disease ~ANCA vasculitis& diff to Rx RA. @RheumNow @eular_org #EULAR2021