Table 3.

Immunological characteristics of the 97 elderly patients with NI according to the initial site of infection

	Lung n = 45	Urinary tract n = 33	Other sites n = 19	p value
IRP+	17(37.8%)	7(22.5%)	5(26.3%)	0.36
CD4/CD8 < 1	6(13.9%)	4(12.1%)	0 (0%)	0.26
CD8 T-cells > 600	9(20.9%)	4(12.1%)	4(21.5%)	0.60
CD28-CD8+ T-cells > 300	17(37.7%)	9(30%)	5(27.7%)	0.73
Positive CMV serology	39 (86.6%)	22 (68.7%)	15 (78.9%)	0.16

Patients with infection at several sites were classified based on the site involved initially.