TB is highly endemic in https://t.co/EbxAucKT9Y. S. African registry reports 97 TB cases in biologic users w/ TB rate 1240/100000 PYs vs zero in biologic naive pts. 1/3 were extra-pulmonary. TB risk highest w/ TNFi Mabs (1683) vs 861 ETN or 681 other MOAs. https://t.co/VUNHVjzkex