Table 3.

Distribution of Pathogens Detected in Both Groups

	No. (%) of patients
Variable	NR-CAP (n = 127)	Rec-CAP (n = 123)	P a
Patients with ≥1 pathogen detected	95 (74.8)	95 (77.2)	NS
Exclusively aerobic bacteria	26 (20.5)	47 (38.2)	.003
Exclusively viruses	21 (16.5)	9 (7.3)	.04
Exclusively atypical microorganisms	24 (18.9)	4 (3.2)	<.001
Mixed infection	24 (18.9)	37 (30.1)	NS
Patients with no pathogen detected	32 (25.1)	28 (22.8)	NS

NOTE. NR-CAP, nonresponding community-acquired pneumonia; NS, not significant; Rec-CAP, recurrent community-acquired pneumonia.

^aBy χ² test.