Severe infections occurred in 25% of patients with anti-neutrophil cytoplasm antibody (ANCA) associated vasculitis (AAV) who were treated with rituximab, according to results of an observational study conducted in the United Kingdom (U.K.) and Austria. Trimethoprim-sulfamethoxazole (TMP/SMX) prophylaxis, however, reduced the risk of severe infections, the investigators reported in Annals of the Rheumatic Diseases.1 Andreas…
![](https://www.the-rheumatologist.org/wp-content/uploads/2018/10/THR_1018_pg106a-150x150.png)