COVID-19 mRNA vaccination immunogenicity (vs immunocompetent): TNFi: 2.3x reduction JAKi: 2.6x AZA: 3.5x MTX: 4.4x steroids: 9x (but confounded by other meds) MMF/MPA: 21x B cell depleting: 57.7x (but 6m gap probably helps) amazing work led by @alhkim #ACR21 ABST0457 @RheumNow https://t.co/cl5vBpNzvQ