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Sources and reservoirs of Staphylococcus capitis NRCS-A inside a NICU.


ABSTRACT:

Background

The methicillin-resistant clone Staphylococcus capitis NRCS-A, involved in sepsis in neonatal intensive care units (NICUs) worldwide, is able to persist and spread in NICUs, suggesting the presence of reservoirs inside each setting. The purpose of the present study was to identify these reservoirs and to investigate the cycle of transmission of NRCS-A in one NICU.

Methods

In a single institution study, NRCS-A was sought in 106 consecutive vaginal samples of pregnant women to identify a potential source of NRCS-A importation into the NICU. Additionally NICU caregivers and environmental including incubators were tested to identify putative secondary reservoirs. Finally, the efficacy of disinfection procedure in the elimination of NRCS-A from incubators was evaluated.

Results

No S. capitis was isolated from vaginal samples of pregnant women. Three of the 21 tested caregivers (14%) carried S. capitis on their hands, but none remain positive after a five-day wash-out period outside NICU. Moreover, the clone NRCS-A persisted during six consecutive weeks in the NICU environment, but none of the sampled sites was constantly contaminated. Finally in our before/after disinfection study, all of 16 incubators were colonized before disinfection and 10 (62%) incubators remained colonized with NRCS-A after the disinfection procedure.

Conclusions

The partial ineffectiveness of incubators' disinfection procedures is responsible for persistence of NRCS-A inside a NICU, and the passive hand contamination of caregivers could be involved in the inter-patient transmission of S. capitis.

SUBMITTER: Butin M 

PROVIDER: S-EPMC6798403 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Publications

Sources and reservoirs of <i>Staphylococcus capitis</i> NRCS-A inside a NICU.

Butin Marine M   Dumont Yann Y   Monteix Alice A   Raphard Aurane A   Roques Christine C   Martins Simoes Patricia P   Picaud Jean-Charles JC   Laurent Frédéric F  

Antimicrobial resistance and infection control 20191017


<h4>Background</h4>The methicillin-resistant clone <i>Staphylococcus capitis</i> NRCS-A, involved in sepsis in neonatal intensive care units (NICUs) worldwide, is able to persist and spread in NICUs, suggesting the presence of reservoirs inside each setting. The purpose of the present study was to identify these reservoirs and to investigate the cycle of transmission of NRCS-A in one NICU.<h4>Methods</h4>In a single institution study, NRCS-A was sought in 106 consecutive vaginal samples of pregn  ...[more]

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