UK study of 17472 newly Dx #RA pts (10997 MTX, 4,540 csDMARDs; 13680 steroids-CS) w/ 1307 Serious Infx (SI) (3/100PY) & 311 SI deaths. MTX signif decr. SI (adj HR 0.72) & CS no effect HR 0.99. SI assoc w/ age, smoker, comorbidity, seropositive, high DAS28. 1 DAS unit incr SI https://t.co/Zmsuaf7Rw3