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A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
Neonatal meningitis caused by Streptococcus gallolyticus subsp. pasteurianus
Maki Nagamatsu1, Taeko Takagi, Tadatomo Ohyanagi
1Department of Clinical Laboratory, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa 216-8511, Japan. m-naga.7122@marianna-u.ac.jp
Abstract:
We encountered a case of neonatal meningitis caused by Streptococcus gallolyticus subsp. pasteurianus. The patient was an 8-day-old boy. Gram staining of the cerebrospinal fluid (CSF) revealed gram-positive cocci in pairs or in short chains. In culture, γ-streptococcus-like colonies grew. The result of 16S rRNA sequence analysis identified S. gallolyticus subsp. pasteurianus. From these results, bacterial meningitis was diagnosed and, as a result of antimicrobial susceptibility testing, single-dose ampicillin therapy was given. Because inflammatory deterioration and spread was suspected from the CSF test results, this therapy was added by panipenem/betamipron. In response to his recovery, antibiotic treatment was stopped and the boy was discharged. This bacterium was classified as S. gallolyticus subsp. pasteurianus in the latest report in 2003. Since this change, there have only been a few cases of neonatal meningitis caused by this bacterium. Here we report this rare case.
Insights
This report details a rare case of neonatal meningitis caused by Streptococcus gallolyticus subsp. pasteurianus in an 8-day-old infant. Prompt diagnosis and tailored antibiotic treatment led to the infant's successful recovery and discharge.
Area of Science:
- Neonatal infectious diseases
- Bacteriology
- Clinical microbiology
Background:
- Neonatal meningitis poses a significant threat to infant health.
- Streptococcus gallolyticus subsp. pasteurianus is an emerging pathogen in neonatal infections.
- Accurate identification and susceptibility testing are crucial for effective treatment.
Observation:
- An 8-day-old male infant presented with symptoms suggestive of meningitis.
- Cerebrospinal fluid analysis revealed Gram-positive cocci.
- 16S rRNA sequencing confirmed the presence of Streptococcus gallolyticus subsp. pasteurianus.
Findings:
- The infant was diagnosed with bacterial meningitis caused by S. gallolyticus subsp. pasteurianus.
- Initial ampicillin therapy was augmented with panipenem/betamipron due to suspected inflammatory progression.
- The infant showed a positive response to the antibiotic regimen and was discharged.
Implications:
- This case highlights the importance of considering S. gallolyticus subsp. pasteurianus in neonatal meningitis.
- Early and appropriate antimicrobial intervention is key to favorable outcomes.
- Further research into the pathogenicity and treatment of this bacterium in neonates is warranted.
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