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Table 1.3 Resistance of common bacterial isolates from all specimens in four regional hospitals (Kowloon, Hong Kong Island and the New Territories) in 2015

Organisms (No. of isolates) % Non-susceptible
Ampicillin Ampicillin + sulbactam Amoxicillin + clavulanate Piperacillin Ticarcillin + clavulanate Piperacillin + tazobactam Cefoperazone + sulbactam Cefuroxime (parenteral) Ceftriaxone Ceftazidime Cefepime Gentamicin Amikacin Ciprofloxacin Cotrimoxazole Imipenem Nitrofurantoin
Escherichia coli (26,943) 76   26     5 4.9 33 36 20 19 30 2 40 50 <1 3
Klebsiella spp. (8,958) 100   27   29 8 6 27 20 18 10 8 1 15 29 <1 45
Enterobacter spp. (2,094) 95   96   34 22 13 40   24 5 3 <1 5 11 2 27
Acinetobacter spp. (2,461)   50     56 56 48     34 53 31 26 56 30 55  
Pseudomonas aeruginosa (8,151)       9 43 4 11     5 4 1 <1 10   8  
Stenotrophomonas maltophilia (1,088)         40         44       22 5 100  

 

Note:

The results were interpreted according to the Clinical Laboratory Standards Institute (CLSI), M100–S20. Most ceftriaxone-non-susceptible isolates were ESBL-producers.