Retrospective review of 46 Rituximab treated ANCA-Assoc Vasculitis pts from 2 clinics (Mexico City, Lund) shows 24% had 18 severe infections (11.5/100 PY) - 72% within the 1st year. RTX was only independent SIE risk factor. 4 pts died, all from infection. https://t.co/8necVFP3AK