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Memorias del Instituto de Investigaciones en Ciencias de la Salud
versão On-line ISSN 1812-9528
Resumo
ORTIZ, Flavia et al. Resistance to multiple antibiotics in serovarities of Salmonella isolated from clinical samples and foods. Mem. Inst. Investig. Cienc. Salud [online]. 2021, vol.19, n.1, pp.37-47. ISSN 1812-9528. https://doi.org/10.18004/mem.iics/1812-9528/2021.019.01.37.
Salmonella enterica is a foodborne pathogen and etiological agent of food outbreaks with a great impact on human health. The increase in bacterial resistance constitutes a threat to public health. The appearance of Salmonella strains with resistance to multiple antimicrobials (MDR) has already been described in humans, food and animals for consumption; for this reason, it is considered very important to know the local epidemiological situation. The target of this work was to generate information on circulating serotypes, antibiotic resistance and the presence of simultaneous resistance to multiple drugs in Salmonella from human clinical samples and food samples in the period from 2017 to 2019.
A total of 668 Salmonella strains isolated in the years 2017, 2018 and 2019 were analyzed from human and food clinical samples, at the Central Public Health Laboratory and / or sent by Laboratories of the Enteropathogens Network. Very diverse serotypes were observed with prevalence of Heidelberg serovar in food and Typhimurium in human samples .It was found that 45,4% of the strains were sensitive to all antibiotics (ATB), 35,6% were resistant from 1 to 6 ATB and 19% with intermediate sensitivity; observing greater resistance to Tetracycline, Ác. Nalidixic, Ampicillin and Nitrofurantoin, to a lesser degree resistance to cephalosporins (C3ªG) and ciprofloxacin was evidenced. The 16.9% the strains presented multiple resistance (3 or more antibiotics) with 37 different phenotypes. The serovars with the highest antimicrobial resistance were Heidelberg, Schwarzengrund and Typhimurium.
Palavras-chave : Salmonella; resistance; serovar; antimicrobial.