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Revista Medica Herediana

On-line version ISSN 1729-214X


BACA, Carlos et al. Serotypes and antimicrobial susceptibility of Shigella isolated in Pediatric Health Institute in Lima, Peru from January to July 2013. Rev Med Hered [online]. 2014, vol.25, n.2, pp.73-79. ISSN 1729-214X.

Objectives: To determine the frequency of serogroups and serotypes and antimicrobial susceptibility profile of Shigella sp., isolated in a pediatric institute from Lima, Peru. Methods: Observational study conducted in 85 isolates of Shigella sp., serologically identified to serogroup and serotype by slide agglutination method. The antibiotic resistance patterns were determined by disk diffusion in agar. Results: 53 (62.3%) were serogroup B (Shigella flexneri), 28 (32.9%) group D (Shigella sonnei) and 4 (4.8%) group C (Shigella boydii) , no bacteria group A (Shigella dysenteriae) was isolated. Respect to serotypes, in group B were 46% 1b, 36% 2a y 18% Y variant; in group C was C4 and in group D all were phase I. Evaluation of susceptibility profile showed that 100% of the strains were susceptible to aztreonam, nalidixic acid and ciprofloxacin; between 80 and 90% were resistant to trimethoprim-sulfamethoxazole, ampicillin and tetracycline. Conclusions: The most common serogroup was Shigella flexneri. Shigella dysenteriae was not reported. There is a high level of resistance sulfamethoxazole / trimethoprim, ampicillin and tetracycline.

Keywords : Shigella; dysentery; drug resistance; anti-infective agents.

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