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Table 1 Isolates from external and gut homogenates of cockroaches collected from neonatal ICU of Tikur Anbessa Hospital, Addis Ababa, Ethiopia, July 2011

From: High load of multi-drug resistant nosocomial neonatal pathogens carried by cockroaches in a neonatal intensive care unit at Tikur Anbessa specialized hospital, Addis Ababa, Ethiopia

Isolate External (%) Gut (%) Both*(%) Total P-value
Klebsiella oxytoca 20(18.7) 24(19.4) 11(25.6) 44(19) 0.87
Klebsiella pneumoniae 16(15) 24(19.4) 9(20.9) 40(17.4)  
Citrobacter spp 14(13) 17(13.7) 5(11.7) 31(13.4) 0.76
Citrobacter diversus 11(10.2) 13(10.5)) 2(4.6) 24(10.4)  
Enterobacter cloacae 15(14) 13(10.5) 5(11.7) 28(12.2)  
Pseudomonas aeruginosa 10(9.3) 9(7.3) 5(11.7) 19(8.3)  
Providencia rettgeri 2(1.9) 8(6.4) - 10(4.3)  
Klebsiella ozaenae 4(3.8) 3(2.4) - 7(3.0)  
Enterobacter aeruginosa 5(4.7) 2(1.6) 1(2.3) 7(3.0)  
Salmonella spp 2(1.9) 4(3.2) 1(2.3) 6(2.6)  
Non Group A streptococcus 3(2.9) 1(0.8) 2(4.6) 4(1.7)  
Staphylococcus aureus 1(0.9) 3(2.4) 1(2.3) 4(1.7)  
Escherichia coli 1(0.9) 2(1.6) 1(2.3) 3(1.3)  
Acinetobacter spp 2(1.9) 1(0.8) - 3(1.3)  
Shigella flexneri 1(0.9) - - 1(0.4)  
Total 107(100) 124(100) 43(100) 231(100) 0.480
  1. * The number of similar isolates from each one of external and gut homogenates of individual batch of cockroaches