Extended spectrum β‑lactamase producing Shigella flexneri serotype‑2 causing bacteremia in a patient with uncontrolled diabetes mellitus.

ABSTRACT

We report a case of Shigella flexneri serotype‑2 causing bacteremia in an elderly gentleman with uncontrolled diabetes mellitus, who had no other apparent risk factors. Antibiotic susceptibility testing revealed that the organism was a multidrug resistant extended spectrum beta‑lactamase producing strain, which was confirmed by molecular characterization. This rare case alerts both the clinician and microbiologist to a previously unaddressed risk factor of Shigella spp. causing bacteremia, as well as emerging resistant strains that are on the rise in immunocompromised patients.