Table 1.

Demographics of immunocompromised patients and controls.

All patients	Hematology/oncology no.	Controls no.
Total number of specimens	161	295
Total number of patients	102	295
Male sex (%)	76 (47)	170 (58)
Nasopharyngeal aspirates (%)	136 (84)	254 (86)
Bronchoalveolar lavage/tracheal aspirates (%)	25 (16)	41 (14)
Age, mo (mean)	94	59
Age mo (median)	57	26
Inpatients (%)	72 (71)	140 (47)
On chemotherapy (%)	34 (41)	NA
Primary immunodeficiency (%)	4 (5)	NA
Bone marrow transplant (%)	26 (31)	NA
Leukemia (%)	42 (48)	NA
Solid organ tumor (%)	12 (15)	NA
Lymphoma (%)	2 (3)	NA
Hematologic disorder (%)	14 (14)	NA

NA, not applicable.