BacteriuriaAsymptomatic InfectionsPyuriaUrinary Tract InfectionsPyelonephritisUrineCystitisSulfamethizoleUrinary CatheterizationPregnancy Complications, InfectiousUrinary CathetersMedical StaffEscherichia coli InfectionsAnti-Infective Agents, UrinaryReagent StripsNitrofurantoinJob DescriptionSpermatocidal AgentsKlebsiellaElectrophoresis, Starch GelSkilled Nursing FacilitiesEscherichia coliContraceptive Devices, FemaleNursing StaffCatheter-Related InfectionsLiability, LegalAnti-Bacterial AgentsNigeriaPregnancyVirulence FactorsBacteriaColony Count, MicrobialPrevalenceUrinalysisBacteriological TechniquesUrographyProspective Studies