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Table 4 Antimicrobial resistance profiles of Gram negative bacteria isolates from various site of infections among patients at Debre Markos Referral Hospital (2011–2014)

From: Bacterial agents and antibiotic resistance profiles of infections from different sites that occurred among patients at Debre Markos Referral Hospital, Ethiopia: a cross-sectional study

Antimicrobials E. coli P. aeruginosa Salmonella spp. Shigella spp. N. gonorrhoeae Total
# T %R # T %R # T %R # T %R # T %R # T %R
Ampicillin 21 7 (33.3) 20 13 (65) 22 22 (100) 8 8 (100) ND ND 71 50 (70.4)
Gentamycin 23 16 (69.6) 16 14 (87.5) ND ND ND ND ND ND 39 30 (76.9)
Ceftriaxone 30 1 (3.3) 25 0 20 9 (45) 6 3 (50) 13 5 (35.8) 94 18 (19.1)
Doxycycline 8 6 (75) 14 2 (14.3) 14 9 (64.3) 6 5 (83.3) 7 5 (71.4) 49 27 (55.1)
Norfloxacin 26 6 (23.1) 20 0 23 11 (47.8) 5 5 (100) 5 5 (100) 79 27 (34.2)
Ciprofloxacin 22 4 (18.2) 17 6 (35.3) 16 4 (25) 3 0 8 8 (100) 66 19 (28.8)
Chloramphenicol 23 3 (13) 13 3 (23.1) 18 4 (22.2) 6 6 (100) 5 5 (100) 65 21 (32.3)
Cotrimoxazole 9 1 (11.1) 8 4 (50) 11 8 (72.7) 4 4 (100) ND ND 32 17 (53.1)
Amoxicillin 4 1 (25) 3 1 (33.3) 9 8 (88.9) ND ND 1 0 17 10 (58.8)
Tetracycline 12 9 (75) 7 4 (57.1) 1 0 1 1 (100) 8 8 (100) 29 22 (75.9)
Erythromycin 1 0 4 2 (50) 2 2 (100) 1 1 (100) ND ND 8 5 (62.5)
Cloxacillin 2 0 2 0 3 0 1 1 (100) 1 0 9 0
Total 181 54 (29.8) 149 49 (32.9) 139 77 (55.4) 41 33 (80.5) 48 33 (68.8) 558 44.8
  1. # T number of isolates tested against each antimicrobial agent, R% percent of isolates resistance to antimicrobial agent, ND not done