Sentence: Among the GNB , a higher prevalence of resistance was observed against cefoxitin ( 93.1 % ) followed by ampicillin ( 79.4 % ) , chloramphenicol ( 72.6 % ) , ceftizoxime ( 65.7 % ) , aztreonam ( 64.9 % ) , cefotaxime ( 53.6 % ) , imipenem ( 38.3 % ) , ceftazidime ( 33.5 % ) , gentamicin ( 32.6 % ) , tetracycline ( 22.2 % ) , and ciprofloxacin ( 19.8 % ) .
Drug combination annotation:
[{'class': 'COMB', 'spans': ['cefoxitin', 'ampicillin', 'chloramphenicol', 'ceftizoxime', 'aztreonam', 'cefotaxime', 'imipenem', 'ceftazidime', 'gentamicin', 'tetracycline', 'ciprofloxacin'], 'is_context_needed': True}]