Recombinant zoster vaccine effective in #SLE without flare. Retrospective Medicare & commercial claims data on pts given 2 RZV doses, matched 1:4 to unVAX. 3592 pts F?u ~1.5 yrs. Vax effectiveness 70% in Medicare; 54% commercial. SLE flare rates HR 0.91& 0.94. https://t.co/WCBOQhb4Ad