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Updated: Aug 7, 2026

A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
Published on: August 12, 2020
Persistent Staphylococcus capitis septicemia in a preterm infant
Pak C Ng1, Viola C Y Chow, Cheuk H Lee
1Department of Pediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong. pakcheungng@cuhk.edu.hk
Insights
Persistent Staphylococcus capitis septicemia in a preterm infant was successfully treated with rifampin and linezolid. This combination therapy, alongside nutritional support, offers an alternative when standard treatments fail for Gram-positive infections.
Area of Science:
- Neonatal Medicine
- Infectious Diseases
- Microbiology
Background:
- * Neonatal sepsis poses a significant challenge, particularly persistent infections.
- * Staphylococcus capitis is an opportunistic pathogen increasingly recognized in healthcare settings.
- * Refractory Gram-positive septicemia requires exploration of alternative therapeutic strategies.
Observation:
- * A preterm infant presented with persistent Staphylococcus capitis septicemia, confirmed by 11 positive blood cultures over 33 days.
- * Clinical indicators suggested a gastrointestinal origin for the persistent infection.
- * Standard antimicrobial regimens proved insufficient for eradicating the pathogen.
Findings:
- * A combination therapy of rifampin and linezolid was administered.
- * Prolonged cessation of enteral feeding was implemented concurrently with antibiotic treatment.
- * This combined approach successfully eradicated the Staphylococcus capitis septicemia.
Implications:
- * Rifampin and linezolid represent a viable alternative treatment for persistent Gram-positive infections, including Staphylococcus capitis septicemia.
- * This therapeutic option should be considered when glycopeptides are ineffective.
- * Management of refractory neonatal sepsis may benefit from tailored antimicrobial combinations and nutritional support.
Abstract:
A preterm infant had persistent Staphylococcus capitis septicemia with 11 consecutive positive blood cultures over a period of 33 days. The clinical evidence suggested that the source of infection probably originated from the gastrointestinal tract. The combination of rifampin and linezolid treatment, together with prolonged stoppage of enteral feeding, successfully terminated the infection. Rifampin and linezolid should be considered as alternative antimicrobial agents when glycopeptides fail to eradicate Gram-positive pathogens from the host.
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