Related Experiment Video
Updated: Jun 22, 2026

Assessment of Intestinal Transcytosis of Neonatal Escherichia coli Bacteremia Isolates
Published on: February 17, 2023
[Enterobacter sakazakii in powdered infant food formulas]
1Service de microbiologie, Equipe d'accueil 2128, Centre hospitalier universitaire, Université de Caen Basse-Normandie, avenue Côte de Nacre, Caen CEDEX, France. isabelle.proudy@rennes.inra.fr
Insights
Cronobacter species are dangerous foodborne pathogens causing severe infections in vulnerable infants. This review synthesizes recent knowledge on Cronobacter, focusing on contamination risks in infant formula and control measures.
Area of Science:
- Microbiology and Food Safety
- Emerging Foodborne Pathogens
- Neonatal Infections
Context:
- Cronobacter species, including "Enterobacter sakazakii" s. l., are recognized as emergent foodborne pathogens.
- These bacteria pose a significant risk for severe infections like meningitis, bacteremia, and necrotizing enterocolitis, particularly in vulnerable neonates (preterm, low-birth-weight, immunocompromised).
- Over 100 cases of Cronobacter infections in newborns have been documented in the last 50 years, highlighting the persistent threat.
Purpose:
- To provide a comprehensive review of recent advancements concerning Cronobacter species.
- To consolidate knowledge on taxonomy, physiology, pathogenicity, clinical manifestations, and detection/characterization methods.
- To examine the role of powdered infant formula as a primary transmission vehicle and discuss contamination control strategies.
Summary:
- This review synthesizes current knowledge on Cronobacter, an emergent foodborne pathogen.
- It covers taxonomy, pathogenicity, clinical cases, detection methods, and the critical link to infant formula contamination.
- Focuses on strategies to mitigate risks associated with Cronobacter in infant nutrition.
Impact:
- Informs researchers and public health authorities on Cronobacter risks and control.
- Guides the implementation of enhanced safety measures in infant formula production.
- Promotes awareness and good hygienic practices among caregivers to prevent infant infections.
Abstract:
Species of the Cronobacter genus ("Enterobacter sakazakii" s. l.) are emergent food-borne pathogens that can cause rare but severe neonatal meningitis, bacteriaemia, and necrotizing enterocolitis. Preterm, low-birth-weight, and immuno-compromised infants exposed to these bacterial species are at particular risk. Over the last 50 years, the literature has reported, mainly in newborn children, more than one hundred cases of infection due to these pathogens. The objective of this review was to synthesize the recent advances in knowledge of species of the Cronobacter genus, in particular with regards to taxonomy, physiology, pathogenicity, clinical cases, the methods for detection, isolation, and characterization, and their presence in powdered formulae for infants and young children, which were identified as the main infection vector. Researchers and international public health authorities have explored the ways contamination occur to better control the risks of pathogen development. Appropriate analysis and control measures were implemented in areas processing powdered formulae for infants and young children, and caregivers and families were informed to undertake good hygienic practices.
Related Concept Videos
Bacterial Gastroenteritis
Reservoir of Infection
Sources of Food Contamination
