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Background: The incidence of neonatal sepsis in the United States of America is 1-2 cases per 1,000 live births. The majority are bacterial infections due to Escherichia coli and Group B Streptococcus. Only a few reported cases due to Streptococcus mitis oralis exist in the literature with limited information regarding management and treatment.
Case Presentation: We report a case of Streptococcus mitis oralis bacteremia and meningitis in a full-term 38 week and 6-day-old female neonate born to a 37-year-old G2P2 mother initially treated with ampicillin and gentamicin for presumed Group B Streptococcus (GBS) sepsis and meningitis, then completing a 14-day treatment course with cefepime.
Conclusion: Clinicians should be aware of S. mitis oralis as it can cause significant illness in both pre-term and term neonates, a population more susceptible to infection. Due to the low incidence of cases, there are no specific guidelines for management of Streptococcus mitis sepsis or meningitis in the newborn. We highlight our clinical decision-making regarding antibiotic selection and treatment duration while focusing on enhancing treatment efficacy based on antimicrobial susceptibilities.
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http://dx.doi.org/10.1186/s12887-025-05845-9 | DOI Listing |
Microbiol Spectr
September 2025
Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA.
Unlabelled: (SA) colonizes most mammals but also represents a danger in clinical settings because it evolves resistance against antibiotics, and SA infections represent a leading cause of death worldwide. SA nasal carriage provides the bacterial reservoir for opportunistic infection because clinical strains often match the patient's own nasally carried strain. The global SA carriage rate is typically reported as 25%-30% after sampling subjects once or twice and defining carrier status using culture-based methods.
View Article and Find Full Text PDFFront Microbiol
August 2025
Department of Immunology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.
The genus is a heterogenous group of commensal and pathogenic bacteria. Members of this genus are classified into two major groups, the pyogenic group and the viridans group streptococci (VGS). VGS are frequently found as normal members of the human microbiome and are regarded as commensals.
View Article and Find Full Text PDFInt Dent J
September 2025
Department of Preventive Dentistry and Dental Public Health, School of Dentistry, Aichi Gakuin University, Nagoya, Japan. Electronic address:
Introduction And Aims: This study compared periodontal status and oral bacteria between rheumatoid arthritis (RA) patients and healthy controls (HCs), and examined the influence of oral bacteria on the association between periodontitis and RA.
Methods: In total, 85 patients with RA and 119 HCs were enrolled. The oral microflora DNA test was used to quantify the oral bacterial species detected in gingival crevicular fluid.
Cancers (Basel)
August 2025
Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia.
: The oral microbiome has been implicated in the pathogenesis of head and neck squamous cell carcinoma (HNSCC). This review examines the association between specific oral bacterial taxa and HNSCC. : A systematic review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to examine the relationship between the oral microbiome and HNSCC.
View Article and Find Full Text PDFRSC Adv
August 2025
Chemistry of Medicinal and Aromatic Plants Department, Research Institute of Medicinal and Aromatic Plants (RIMAP), Beni-Suef University 62511 Egypt
Antibiotic resistance is a major global health threat, reducing the effectiveness of standard treatments and increasing mortality rates. This study explores the potential of zinc oxide nanoparticles (ZnO-NPs), synthesized using biomass, to combat levofloxacin-resistant . ZnO-NPs were conjugated with levofloxacin (LFX), and their antibacterial activity was evaluated both alone and in combination with antibiotics.
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