Antimicrobial agents Organism
E. coli S.aureus CoNS* K. pneumonia P. mirabilis P. aeruginosa Citrobacter spp. Serratia spp.
Ampicillin 90.0 21.1 36.6 100.0 100.0 81.3 100.0 100.0
Amoxicillin 100.0 100.0 97.6 100.0 100.0 81.3 100.0 100.0
Amikacin 50.0 42.1 51.2 80.0 25.0 50.0 None 50.0
 Erythromycin ND 15.8 19.5 ND ND ND ND ND
 Methicillin ND 10.5 41.5 ND ND ND ND ND
Doxycycline ND 31.6 34.1 ND ND ND ND ND
Clindamycin ND 31.6 14.6 ND ND ND ND ND
Vancomycin ND None 4.9 ND ND ND ND ND
Ciprofloxacin 40.0 5.3 19.5 20.0 None 12.5 100.0 50.0
Ceftriaxone 30.0 5.3 22.0 60.0 50.0 75.0 100.0 100.0
Gentamicin 40.0 26.3 26.8 80.0 None 25.0 100.0 100.0
Kanamycin 60.0 47.4 53.7 20.0 75.0 56.3 100.0 None
Tetracycline 70.0 57.9 39.0 20.0 25.0 37.5 100.0 100.0
SXT 70.0 31.6 43.9 60.0 25.0 37.5 100.0 None
Chloramphenicol 50.0 26.3 58.5 60.0 75.0 43.8 100.0 100.0
Table 7: Resistance pattern (in percentage) of bacterial isolates from nasal swab of personnel and hospital environment at Gondar University Teaching Hospital