Nakafero et al. Self-controlled case series analysis. No increased risk RMD flare with SARS-CoV-2 vaccination. In fact reduced risk! aIRR 0.89(0.80-0.98). No evidence in any of multiple subanalyses either @RheumNow #ACR22 Abstr#2194 https://t.co/r5pOkdjnR1 https://t.co/YpwMkJ3WVe