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Updated: May 16, 2026

A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
Published on: August 12, 2020
[Maternal antibiotic use and Gram negative bacteria infection in neonates]
1Service de Pédiatrie, Centre hospitalier de Versailles, 177, rue de Versailles, 78150 Le Chesnay, France. vhentgen@ch-versailles.fr
Insights
Maternal antibiotic use prevents early neonatal infections but may increase resistant Gram-negative bacteria. Reassessing antenatal prophylaxis strategies is crucial to balance benefits and long-term ecological impacts on newborns.
Area of Science:
- Neonatal infections
- Microbial resistance
- Antibiotic stewardship
Context:
- Maternal antibiotic use offers benefits for early neonatal group B streptococcal infections.
- Rising resistance in Gram-negative bacteria necessitates re-evaluation of current prevention strategies.
- The impact of antenatal antibiotic prophylaxis on the newborn microbiome requires careful consideration.
Purpose:
- To review the current state of antenatal antibiotic prophylaxis.
- To evaluate the bacteriological consequences of these strategies on newborns.
- To inform evidence-based recommendations for future prevention protocols.
Summary:
- Selective intrapartum chemoprophylaxis for early-onset group B streptococcal disease is supported despite a potential rise in resistant Gram-negative infections.
- Other antenatal antibiotic indications are more controversial, with antibiotic choices often lacking strong methodological backing.
- Long-term ecological effects and the use of narrow-spectrum antibiotics should guide strategies for non-GBS indications.
Impact:
- Ensures continued protection against early-onset group B streptococcal infections.
- Highlights the need for cautious antibiotic selection to mitigate the development of resistant Gram-negative bacteria in neonates.
- Promotes a shift towards more targeted and ecologically sound antibiotic use in pregnancy.
Abstract:
Prevention strategies by maternal antibiotic use have provided undeniable benefits for neonates regarding early neonatal group B streptococcal infections. But at a time where the evolution of resistance of Gram negative bacteria is of particular concern, it is our duty to reassess prevention strategies with a careful evaluation of their potential impact on Gram negative bacteria in the newborn. We conducted a literature review to define the state of the art of antenatal antibiotic prophylaxis and its bacteriological consequences on the newborn. Prevention strategies of early-onset neonatal group B streptococcal disease with selective intrapartum chemoprophylaxis should not be challenged, even at the cost of a small increase of the incidence of late-onset infections with resistant Gram negative bacteria. However, other indications seem more controversial and the type of antibiotics used is not always based on methodologically well-conducted studies. In these indications the prevention strategies should consider not only the immediate expected benefits, but also the long-term ecological impact by using whenever possible narrow-spectrum antibiotics.
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