Systemic lupus erythematosus (SLE) is a condition in which the immune system attacks healthy cells and tissues throughout the body, and infection is one of the most common causes of death in patients with SLE. 1 SLE patients are highly susceptible to infections as a result of disease-related immunological dysfunction itself or immunosuppressive treatments. A systematic review and meta-analysis showed that the pooled relative risks (RRs) for overall severe infection are significantly higher in patients with SLE than in the general