Interesting poster #POS0939 from @SteZhao #EULAR2026 Long-term or recurrent antibiotic use in childhood associated w doubled risk of axSpA in HLA-B27+ individuals 11,611 HLA-B27+ UK biobank Recall bias? Yes but self-reported exposure validated with primary care data @RheumNow https://t.co/VmxI3BW6FE