Epidemiologic perspectives on Enterobacter for the infection control professional

Area of Science:

• Medical Microbiology
• Infectious Diseases
• Antimicrobial Resistance

Background:

• Enterobacter species are increasingly recognized as significant nosocomial pathogens.
• Reservoirs include wounds and various bodily tracts; infections often occur in immunocompromised patients with prior antibiotic exposure.
• The widespread use of broad-spectrum antibiotics has amplified the prevalence and clinical impact of Enterobacter infections.

Purpose of the Study:

• To highlight the emergence of Enterobacter species as critical nosocomial pathogens.
• To discuss the factors contributing to their increased prominence and antibiotic resistance.
• To present molecular typing methods for investigating the dissemination of resistant strains.

Main Methods:

• Review of clinical significance and reservoirs of Enterobacter species.
• Discussion of the role of broad-spectrum antibiotics in promoting resistance.
• Description of molecular techniques including plasmid analysis, restriction endonuclease analysis, pulsed-field electrophoresis, and ribotyping.

Main Results:

• Enterobacter species demonstrate a significant propensity for developing resistance to administered antibiotic therapies.
• Molecular typing methods are identified as valuable tools for epidemiological investigations.
• These methods aid in understanding the transmission dynamics of antibiotic-resistant Enterobacter strains.

Conclusions:

• Enterobacter species pose a substantial threat as hospital-acquired pathogens due to their resistance patterns.
• Effective investigation and control of Enterobacter infections rely on understanding their reservoirs and resistance mechanisms.
• Molecular typing techniques are crucial for tracing the spread of antibiotic-resistant Enterobacter strains in healthcare environments.