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Table 1 Relative frequency of blood isolates in Henry Dunant Hospital, Athens, Greece (01/01/2001–30/6/2005).

From: Secular trends of antimicrobial resistance of blood isolates in a newly founded Greek hospital

  Number of isolates (proportion within the year)
Microorganisms 2001 (n = 182) 2002 (n = 506) 2003 (n = 693) 2004 (n = 566) 2005* (n = 208) Total p-value
Gram-positive        
Coagulase-negative staphylococci 84 (46.2) 282 (55.6) 377 (54.4) 297 (52.5) 94 (45.1) 1134 (52.5) 0.03
Staphylococcus aureus 12 (6.6) 40 (7.9) 42 (6.1) 27 (4.8) 8 (3.8) 129 (5.9) 0.16
Enterococcus faecalis 2 (1.1) 15 (3.0) 21 (3.0) 6 (1.1) 4 (1.9) 48 (2.2) 0.09
Enterococcus faecium 4 (2.2) 14 (2.8) 8 (1.2) 11 (1.9) 2 (0.9) 39 (1.8) 0.25
Gram negative        
Escherichia coli 15 (8.2) 36 (7.1) 57 (8.2) 54 (9.5) 30 (14.4) 192 (8.9) 0.03
Pseudomonas aeruginosa 13 (7.1) 29 (5.7) 35 (5.0) 26 (4.6) 11 (5.3) 114 (5.2) 0.72
Acinetobacter baumannii 10 (5.5) 10 (2.0) 15 (2.2) 38 (6.7) 17 (8.2) 90 (4.1) <0.001
Proteus mirabilis 3 (1.7) 1 (0.2) 1 (0.1) 4 (0.7) 3 (1.4) 12 (0.5) 0.03
Klebsiella spp. 5 (2.8) 17 (3.4) 39 (5.6) 33 (5.7) 11 (5.3) 105 (4.8) 0.18
Enterobacter spp. 4 (2.2) 8 (1.6) 24 (3.5) 9 (1.6) 3 (1.4) 48 (2.2) 0.11
Salmonella spp. 2 (1.1) 1 (0.2) 4 (0.6) 9 (1.6) 0 (0) 16 (0.7) 0.05
Others(include other Gram positive and Gram negative) 22 (12) 25 (4.9) 34 (4.9) 26 (4.6) 15 (7.2) 122 (5.6) 0.002
Fungi        
Candida 6 (3.3) 29 (5.7) 36 (5.2) 26 (4.6) 10 (4.8) 107 (4.9) 0.74