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Multiresistant Staphylococcus epidermidis in a neonatal care unit.

Jacobus H. Sloos¹, Lenie Dijkshoorn, Thera A. M. Trienekens

¹Department of Medical Microbiology, Leiden University Hospital, The Netherlands.

Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases

|August 1, 1996

Summary

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A study in a neonatal intensive care unit found that a multiresistant Staphylococcus epidermidis strain increased in colonization among vulnerable patients during their hospital stay. Further research is needed to determine if this specific strain persists in the hospital environment.

Area of Science:

Medical Microbiology
Neonatalogy
Hospital Epidemiology

Background:

Neonatal intensive care units (NICUs) are susceptible to bacterial colonization.
Staphylococcus epidermidis is a common cause of healthcare-associated infections in neonates.

Purpose of the Study:

To investigate the presence and diversity of Staphylococcus epidermidis (S. epidermidis) strains in a university hospital NICU.
To characterize S. epidermidis isolates based on antibiogram, plasmid profile, and biotype.

Main Methods:

Collected samples from neonates' skin and mucous membranes over six weeks.
Characterized 128 S. epidermidis isolates using antibiogram, plasmid typing, and biotyping.
Monitored colonization patterns over successive sampling periods.

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Main Results:

Identified seven antibiogram types, 36 plasmid types, and 14 biotypes of S. epidermidis.
A multiresistant S. epidermidis strain (one plasmid type) increased in prevalence among neonates during admission.
No clear correlation was found between biotypes and resistance or plasmid profiles.

Conclusions:

A multiresistant S. epidermidis type showed increasing colonization in immunocompromised neonates during NICU admission.
The persistence of this multiresistant strain in the NICU requires further investigation.