Antimicrobial Resistance of Shigella spp. isolated in the State of Pará, Brazil


Autoria(s): Bastos,Flávia Corrêa; Loureiro,Edvaldo Carlos Brito
Data(s)

01/10/2011

Resumo

INTRODUCTION: Shigella spp. are Gram-negative, nonsporulating, rod-shaped bacteria that belong to the family Enterobacteriaceae and are responsible for shigellosis or bacillary dysentery, an important cause of worldwide morbidity and mortality. METHODS: We studied the antibiotic resistance profiles of 122 Shigella spp. strains (81 S. flexneri, 41 S. sonnei, 1 S. boydii) isolated from patients (female and male from 0 to 80 years of age) presenting diarrhea in different districts of the State of Pará, in the North of Brazil. The antibiotic resistance of the strains, isolated from human fecal samples, was determined by the diffusion disk method and by using the VITEK-2 system. RESULTS: The highest resistance rate found was the resistance rate to tetracycline (93.8%), followed by the resistance rate to chloramphenicol (63.9%) and to trimethoprim/sulfamethoxazole (63.1%). Resistance to at least three drugs was more common among S. flexneri than S. sonnei (39.5% vs. 10%). Six (4.9%) strains were susceptible to all the antibiotics tested. All strains were susceptible to cefotaxime, ceftazidime, ciprofloxacin, nalidixic acid and nitrofurantoin. CONCLUSIONS: High rates of multidrug resistance in Shigella spp. are a serious public health concern in Brazil. It is extremely important to continuously monitor the antimicrobial resistances of Shigella spp. for effective therapy and control measures against shigellosis.

Formato

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Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822011000500016

Idioma(s)

en

Publicador

Sociedade Brasileira de Medicina Tropical - SBMT

Fonte

Revista da Sociedade Brasileira de Medicina Tropical v.44 n.5 2011

Palavras-Chave #Shigella spp #State of Pará #Antimicrobial resistance #Diarrhea
Tipo

journal article