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Journal of Venomous Animals and Toxins including Tropical Diseases

versión On-line ISSN 1678-9199

Resumen

LOURENCO, N. G. G. S.; TAKAHASHI, C. K.; LOPES, T. F.  y  LOPES, C. A. M.. Environmental parameters and antimicrobial susceptibility of enterobacteriaceae isolated from estuarine waters of São Vicente, São Paulo state, Brazil. J. Venom. Anim. Toxins incl. Trop. Dis [online]. 2007, vol.13, n.2, pp.472-478. ISSN 1678-9199.  http://dx.doi.org/10.1590/S1678-91992007000200006.

Diseases transmitted by water consists a serious public health problem and enterobacteria are the main group of microorganisms responsible for outbreaks in humans. Such pathogenic bacteria proliferate in water polluted by domestic and industrial sewage and reach the population through seawater contact. The aim of the present work was to study environmental parameters as well as to identify Enterobacteriaceae species and their antimicrobial susceptibility in water samples collected from the estuarine area of São Vicente city (São Paulo State, Brazil). Strains were identified by using traditional biochemical tests described in literature and antimicrobial susceptibility tests were carried out using the disk diffusion method. Out of 26 samples, Escherichia coli was the most frequent species (40.1%), followed by Citrobacter, Enterobacter and Klebsiella. The most effective drugs against the tested microorganisms were gentamycin, netilmicin, ciprofloxacin and cefepime. Since these bacteria are commonly found in seashore contaminated by sewage effluents, it can be concluded that estuarine waters of São Vicente are polluted and potentially capable of causing diseases and spreading pathogenic bacteria to human communities.

Palabras clave : estuarine water; environmental parameters; Enterobacteriaceae; antimicrobial susceptibility.

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