Japanese retrospective study-194 #RA pts Rx w/ JAK inhib (74 vaccinated w/ recombinant zoster (RZV) & 120 Not-Vax). H.zoster lower w/ RZV (4.8/100PY) vs UnVax (7.8/100PY) w/ overall efficacy of 59.1%. RSV Vax pts who got HZ had signif lower lymphocyte #s, higher SDAI & CDAI. https://t.co/4VMWPhzXeL