Multiply Antibiotic Resistant Gram-Negative Bacilli in a Long Term Care Facility A Case Control Study of Patient rick Factors and Prior Antibiotic Use

Abstract

In our long-term-care facility, acquisition of multiply resistant Enterobacteriaceae was associated with the presence of decubitus ulcers and prior exposure to ampicillin. Acquisition of resistant P aeruginosa was associated with total antibiotic exposure. Molecular typing of P aeruginosa isolates implicated patient-to-patient transmission of a limited number of resistant strains.