Scattergram analysis to explore the emerging problem related to in vitro susceptibility test for Salmonella enterica serovar Typhi to ciprofloxacin
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Updated: Aug 22, 2026

Combination of Adhesive-tape-based Sampling and Fluorescence in situ Hybridization for Rapid Detection of Salmonella on Fresh Produce
Published on: October 18, 2010
Nishith Kumar Pal1, Shyamapada Mandal, Manisha Deb Mandal
1Department of Bacteriology and Serology, Calcutta School of Tropical Medicine, C.R. Avenue, Kolkata 700073, India.
Abstract:
Ciprofloxacin susceptibility using a disk diffusion method and minimum inhibitory concentration (MIC) value determination for 421 S. Typhi isolates showed comparable results for 296 (70%) isolates with an MIC =0.075 mg/L. However, of the remaining 125 strains that had MIC >/=0.1 mg/L, signifying resistance, 123 (98.4%) showed discrepant results with the disk diffusion test (66 sensitive, 57 intermediately sensitive). This raises questions about National Committee for Clinical Laboratory Standards guidelines regarding the interpretative zone size for ciprofloxacin.
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