Table 4.

Most frequent pathogens isolated from urine and blood cultures in older and younger adults in the first year after KT.

Pathogens	Older adults (65+) n (%)	Younger adults (40–60 years of age) n (%)
Blood cultures	n=23 †	n=12
Gram negatives
Klebsiella spp	8 (34.8)	2 (11.1)
E. coli	5 (21.7)	4 (22.2)
Serratia spp	1 (4.3)	2 (11.1)
Pseudomonas spp	3 (13.0)	0 (0)
Citrobacter spp	1 (4.3)	0 (0)
Gram positives
Enterococcus	2 (8.7)	2 (11.1)
CoNS	5 (21.7)	1 (5.5)
Other
Candida	0 (0)	1 (5.5)
M. abscessus	1 (4.3)	0 (0)
Urine cultures	n=79	n=50
Gram negatives
Klebsiella spp	25 (31.6)	22 (44.0)
E. coli	14 (17.7)	6 (12.0)
Enterobacter spp	11 (13.9)	3 (6.0)
Pseudomonas spp	9 (11.4)	0 (0)
Serratia spp	1 (1.3)	2 (4.0)
Citrobacter spp	3 (3.8)	2 (4.0)
Proteus spp	0 (0)	1 (2.0)
Morganella morganii	2 (2.5)	0 (0)
Gram positives
Enterococcus spp	10 (12.7)	10 (20)
Streptococcus spp	3 (3.8)	0 (0)
Other
Yeast	2 (2.5)	3 (6.0)

^†Three bacteremias in the older group were polymicrobial. CoNS: coagulase-negative staphylococci.