Polymyxins play a significant role against carbapenem-resistant Enterobacteriaceae (CRE). A total of 121 clinical samples yielded growth of CRE that were included in the study. Rapid Polymyxin NP test was performed on all the isolates as described by Nordmann P et al. and results were compared with broth microdilution method. Majority of the isolates were Klebsiella pneumoniae (70.2%) followed by Escherichia coli (17.4%). A total of 71 isolates were found resistant and 50 as susceptible by broth microdilution. Sensitivity and specificity of rapid polymyxin NP test were found to be 97.2% and 100%, respectively. Our study concluded that rapid polymyxin NP test is reliable and can be used as an alternative to broth microdilution in resource limited settings.
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Shoaib, M., Hussain, A., Satti, L. et al. Evaluation of rapid polymyxin Nordmann Poirel test for detection of polymyxin resistance in clinical isolates of Enterobacteriaceae. Eur J Clin Microbiol Infect Dis (2020). https://doi.org/10.1007/s10096-020-03942-4