Shigella serotypes among hospitalized patients in urban Bangladesh and their antimicrobial resistance

Abstract

We studied the isolation of Shigella spp., and their antimicrobial resistance. S. flexneri (54%) was most frequently isolated, followed by S. dysenteriae (20%), S. boydii (16%) and S. sonnei (10%). Among S. flexneri (n=122), 29 (24%) were 2a, and 23 (19%) were 2b. None of the Shigella strains were resistant to mecillinam or ciprofloxacin. Resistance to nalidixic acid was most frequent among S. dysenteriae type 1 (100%) followed by S. flexneri 2a (69%), and S. flexneri 2b (52%). Systematic monitoring is needed to identify most prevalent serotypes, and to detect changes in the prevalence and antimicrobial resistance pattern.