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Published on: December 10, 2016
Impact and Time Course of Clostridium difficile Colonization in Very Low Birth Weight Infants
Karin Pichler1, Benjamin Bausenhardt1, Steliana Huhulescu2
1Division of Neonatology, Intensive Care, and Neuropediatrics, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.
Insights
Clostridium difficile colonization in very low birth weight infants (VLBWI) was lower than previously reported and did not lead to adverse outcomes. In-hospital colonization was minimal, with no hypervirulent strains detected.
Area of Science:
- Microbiology
- Neonatalogy
- Infectious Diseases
Background:
- Clostridium difficile is a common cause of healthcare-associated infections.
- High colonization rates are observed in asymptomatic neonates and infants, but data is dated.
- Previous studies focused on term and late preterm infants.
Purpose of the Study:
- To determine the impact and time course of Clostridium difficile colonization in very low birth weight infants (VLBWI).
- To utilize modern PCR-based diagnostic technologies for accurate assessment.
- To evaluate colonization in the context of current medical practices.
Main Methods:
- Stool samples from 190 VLBWI were analyzed using PCR ribotyping.
- Regular interval sampling occurred during hospitalization and continued for two years.
- Colonization rates and potential risk factors were assessed.
Main Results:
- A 32% overall colonization rate was observed during the first two years of life.
- In-hospital colonization was 8%, primarily occurring within the first six months.
- No hypervirulent strains were detected, and colonization was not linked to adverse outcomes.
Conclusions:
- Clostridium difficile colonization in VLBWI is lower than previously reported.
- Colonization in this cohort did not result in adverse outcomes.
- Oral lactoferrin and piperacillin/tazobactam showed a negative correlation with colonization.
Background:
Clostridium difficile is a gram-positive, anaerobic spore-forming, toxin-producing bacillus, which is one of the most common causes for health care-associated infections. High colonization rates in clinically asymptomatic neonates and infants have been described, although most studies go back to the early 1980 and 1990s, and were carried out in term and late preterm infants.
Objectives:
The aim of our study was to determine both the impact and time course of C. difficile colonization in a cohort of very low birth weight infants (VLBWI) in an era of PCR-based technologies for diagnosis.
Methods:
Stool samples of VLBWI were analyzed for the presence of C. difficile strains in regular intervals during the hospital stay by PCR ribotyping. Analysis was continued throughout the first 2 years of life.
Results:
A 32% C. difficile colonization rate during the first 2 years of life and an in-hospital colonization rate of 8% was found in a cohort of 190 VLBWI. C. difficile colonization occurred mainly in the first 6 months of life, which was similar to term neonates. In-hospital colonization accounted for only a small percentage of cases with no detection of hypervirulent strains. Also, C. difficile colonization was not related to an adverse outcome in this VLBWI cohort. Oral lactoferrin of bovine origin and treatment with piperacillin/tazobactam were negatively correlated with C. difficile colonization in our study.
Conclusions:
C. difficile colonization in our cohort of VLBWI was significantly lower than has been described in the literature and was not related to an adverse outcome.
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