Table 2.

Incidence of serious infections by LN status

	SLE only n=86	LN n=87
Number of serious infections per person
0	81 (94.2%)	79 (90.8%)
1	4 (4.7%)	6 (6.9%)
2	1 (1.2%)	2 (2.3%)
First serious infection	5 (5.8%)	8 (9.2%)
Infection site (n=13)
Cystitis	0 (0%)	1 (13%)
Cellulitis	0 (0%)	2 (25%)
Gastroenteritis	0 (0%)	2 (25%)
Mucositis	0 (0%)	1 (13%)
Pelvic inflammatory disease	1 (20%)	0 (0%)
Pneumonia	3 (60%)	1 (13%)
Psoas abscess	1 (20%)	0 (0%)
Pyelonephritis	0 (0%)	1 (13%)
Infection type (n=13)
Bacterial	4 (80%)	3 (38%)
Viral	0 (0%)	3 (38%)
Mycobacterial	1 (20%)	0 (0%)
Unknown	0 (0%)	2 (25%)
Identified pathogen (n=13)
HSV1	0 (0%)	1 (13%)
Herpes zoster	0 (0%)	1 (13%)
Clostridium difficile	0 (0%)	1 (13%)
Mycobacterium tuberculosis complex	1 (20%)	0 (0%)
Neisseria gonorrhoeae	1 (20%)	0 (0%)
Norovirus	0 (0%)	1 (13%)
Stenotrophomonas maltophilia	1 (20%)	0 (0%)
Streptococcus pneumoniae	1 (20%)	0 (0%)
Streptococcus pyogenes	1 (20%)	0 (0%)
Unknown	0 (0%)	2 (25%)
No growth	0 (0%)	2 (25%)
Second serious infection	1 (1.2%)	2 (2.3%)
Infection site (n=3)
Peritonitis	0 (0%)	1 (50%)
Pneumonia	0 (0%)	1 (50%)
Septic arthritis	1 (100%)	0 (0%)
Infection type (n=3)
Bacterial	1 (100%)	2 (100%)
Identified pathogen (n=3)
Pseudomonas aeruginosa	1 (100%)	0 (0%)
Staphylococcus epidermidis	0 (0%)	1 (50%)
Streptococcus pneumoniae	0 (0%)	1 (50%)

Data are presented as n (%).

HSV1, herpes simplex virus 1; LN, lupus nephritis.