TABLE 1.

Characteristics of 6 patients colonized by P. jiroveci and 11 patients who developed PCP, for all of whom the fungus detected in BAL fluids was typed

Patient no.	Age	Sexa	Date of BAL (mo-day-yr)	Underlying condition(s)	T-cell countb		Clinical presentation of P. jiroveci infection (alternative diagnosis of PCP, duration of follow-up without PCP)
					CD4+/CD8+	CD4+ (106/liter)
A.6	64	F	03-06-96	Myeloma	0.97	185	Pulmonary colonization (bacterial pneumonia, 3 months)
A.9c	44	M	03-08-96	Panhypopituitarism	0.46	389	Pulmonary colonization (sarcoidosis, 12 months)
A.10	44	F	03-13-96	Renal transplantation	ND	ND	Pulmonary colonization (bacterial pneumonia, 12 months)
A.20	44	F	04-17-96	HIV infection	0.08	6	PCP
A.36	35	M	05-22-96	HIV infection	0.18	31	PCP
A.64	33	M	08-30-96	HIV infection	0.06	108	PCP
A.93	50	M	02-06-97	HIV infection	0.19	59	PCP
N.20d	85	F	05-30-97	Chronic obstructive pulmonary disease	1.8	968	Pulmonary colonization (exacerbation of chronic bronchitis, 6 months)
N.24	52	F	07-09-97	Systemic lupus erythematosus	0.60	569	Pulmonary colonization (pulmonary lymphoma, 32 months)
N.28	67	M	07-17-97	HIV infection	0.20	68	PCP
N.60	29	F	10-03-97	Systemic lupus erythematosus, long-term corticosteroid treatment	0.97	332	PCP
N.61	34	M	01-26-98	HIV infection	0.04	7	PCP
N.51	41	F	03-26-98	Chronic lymphoid leukemia	1.64	71	Pulmonary colonization (bacterial pneumonia, 16 months)
N.50	60	M	05-20-98	Pemphigus vulgaris, long-term cortico- steroid treatment	0.92	638	PCP
N.69	33	M	11-27-98	HIV infection	0.09	17	PCP
N.70	35	M	02-18-99	Hepatic granulomatosis, long-term corticosteroid treatment	ND	ND	PCP
N.71	40	F	03-03-99	HIV infection	0.09	22	PCP

^aF, female; M, male.

^bThe normal values were as follows: for CD4⁺/CD8⁺ T cells, >1; for CD4⁺ T cells, >600. ND, not done.

^cThe case of patient A.9 was previously reported in reference 29.

^dPatient N.20 was the only immunocompetent colonized patient.