#EULAR2022 POS0256 by @CaoilfhionnMD, @DrLisaCS, @JuliePaikMD from @HopkinsRheum 10% of pts seronegative for COVID antibodies after vaccination ⭐️Risk factors: Non-white, J&J vaccine, MMF, RTX, GC, combination Rx, not-withholding peri-vaccination immunosuppression @Rheumnow https://t.co/Izd4QJlOWH