| molecular epidemiology of multiply antibiotic-resistant shigella flexneri in fortaleza, brazil. | in northeastern brazil, strains of shigella flexneri resistant to multiple antibiotics are often found in patients in both urban areas and community hospitals. this study used pulsed-field gel electrophoresis (pfge) and plasmid analysis to further analyze the molecular epidemiology of shigella flexneri strains isolated from hospitals and an urban community in fortaleza, brazil. twenty-six strains of s. flexneri from three distinct areas in the city of fortaleza, brazil, were examined: 14 strains ... | 1997 | 9114381 |