Abstract

The work is devoted to the study of susceptibility to antibiotics of 42 strains of Shigella sonnei isolated from patients involved in three food-borne outbreaks that occurred in the North-Western region of Russia in 2018. All strains belonged to biovar IIg, showed resistance to tetracycline and trimethoprim/sulfamethoxazole. The strains were susceptibility to nitrofurantoin, ciprofloxacin, but were resistant to nalidixic acid, were susceptibility to aminoglycosides (gentamycin, tobramycin, and amikacin), and resistance to streptomycin. All strains were susceptibility to azithromycin (MIC 8 mg/L). One outbreak was caused by S. sonnei additionally resistant to chloramphenicol and cephalosporins, producing ESBLs. Key word: Shigella sonnei biovar IIg, antibiotic resistance, outbreaks, ESBL

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