RESUMO
The enteropathogenic role of cytolethal distending toxin-producing Escherichia coli was investigated by searching sequences homologous to the cdt genes of an O86 strain among 2,074 isolates from 200 children with acute diarrhea and 200 controls in Brazil. Only one (0.5%) diarrheic child and two (1.0%) non-diarrheic controls harbored cdt-positive isolates.
Assuntos
Toxinas Bacterianas/biossíntese , Diarreia/microbiologia , Infecções por Escherichia coli/microbiologia , Escherichia coli/patogenicidade , Toxinas Bacterianas/toxicidade , Brasil , Estudos de Casos e Controles , Pré-Escolar , Escherichia coli/classificação , Escherichia coli/genética , Escherichia coli/isolamento & purificação , Fezes/microbiologia , Genes Bacterianos , Células HeLa , Humanos , Lactente , SorotipagemRESUMO
Between March and July, 1992, we screened for Vibrio all fecal samples submitted for bacteriologic diagnosis at a private clinical laboratory in Recife. Of 1435 cultures examined only 1 (0.07) was positive for V. cholerae 01, biovar Eltor, serovar Inaba, but 17 (1.2) yielded non-cholera Vibrio (V. cholerae non-01; V. fluvialis; V. furnissii, V. parahaemolyticus and Vibrio spp). Thus, V. cholerae 01, differently of other enteropathogenic vibrios, spared individuals of good socioeconomic conditions even during the cholera epidemic, which made hundreds of victims in the neighboring slums.
