Table 2

Relative frequency of blood isolates in General Hospital of Tripolis, Greece (2001–2005).


Number of isolates (proportion) within the specified periods*

Microorganisms
2001
2002
2003
2004
2005
Total
p-value

Gram-positive







Coagulase-negative staphylococci
15 (32.6)
15 (31.3)
26 (36.6)
26 (29.5)
52 (43.3)
134 (35.9)
0.28
Stapylococcus aureus
6 (13)
9 (18.8)
14 (19.7)
21 (23.9)
18 (15)
68 (18.2)
0.45
Streptococcus viridans


1 (1.4)


1 (0.3)

Gram-negative







Escerichia coli
20 (43.5)
17 (35.4)
22 (31)
22 (25)
27 (22.5)
108 (29)
0.06
Pseudomonas aeruginosa
2 (4.3)
3 (6.3)
4 (5.6)
11 (12.5)
9 (7.5)
29 (7.8)

Acinetobacter baumannii


3 (4.2)
2 (2.3)
1 (0.8)
6 (1.6)

Proteus mirabilis
1 (2.2)
3 (6.3)
0(0)
0(0)
2 (1.6)
6 (1.6)

Klebsiella pneumoniae
1 (2.2)
1 (2.1)
0(0)
0(0)
2 (1.6)
4 (1.1)

Enterobacter


1 (1.4)


1 (0.3)

Candida spp
1 (2.2)


4 (4.6)
7 (5.8)
12 (3.2)

Miscellaneous Gram-negative







Serratia marscescens




1 (0.8)
1 (0.3)

Morganella morgannii



1 (1.1)

1 (0.3)

Citrobacter



1 (1.1)

1 (0.3)

Achromobacter




1 (0.8)
1 (0.3)

TOTAL
46 (100)
48 (100)
71 (100)
88 (100)
120 (100)
373 (100)


* for the isolate of the first positive blood culture

Falagas et al. BMC Microbiology 2006 6:41   doi:10.1186/1471-2180-6-41