Frecuencia y susceptibilidad antibiótica de enterobacterias aisladas de urocultivos, en comunidades del estado Sucre, durante el lapso 2005-2006.

Frequency and antibiotic susceptibility of enterobacteria isolated from urocultures in communities of Sucre State during 2005-2006.In this study we determined the prevalence and antibiotic susceptibility of enterobacteria isolated from urocultures, processed from 718 individuals randomly selected, with and without urinary tract infection (UTI), from the Caituco and Cangua (rural areas; 222 and 259 individuals, respectively) and Brasil (urbanarea; 237 individuals) from Sucre state, Venezuela. We included individuals from both sexes, and all ages. The samples were processed by physical, chemical and microscopic analysis of the sediment, and URICULT media paddle was used for uroculture. The antibiotic susceptibility test was performed according to the CLSI specifications, using the antibiotics amikacin, ampicillin, cefotaxime, cefepime, nalidixic acid, ciprofloxacin, tetracycline, trimetropim-sulfametoxazol, nitrofurantoine, and polymixin B. Sixmales (1.81%) and 66 females (17.05%) presented UTI, out of which 50% were symptomatic, with dysuria (33.33%) and burning during urination(24.24%) being the most frequent symptoms. UTI prevalence infemales from Caituco (24.79%) was much higher than in Cangua (12.59%) and Brasil (13.33%). Most of the UTIs were symptomatic in individuals from Caituco, while in most from Brasil were asymptomatic.There were differences of UTI only among age groups in individuals from Brasil, prevalence being higher in 30-year-old individuals. Escherichia coli was the most frequent species (36.37%) producing mostly asymptomatic infections (15/24). Citrobacter sp. was 100% resistant to all the antibiotics tested. Amikacin presented the highest efficacy (98.59%), while ampicillin and tetracycline showed the lowest (40.85% and 56.34%, respectively). The identified bacterial strains isolated from Brasil were the most sensitive toantibiotics.