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A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
Group B streptococcus infection in infancy: 21-year experience
Chiang-Hua Liao1, Li-Min Huang, Chun-Yi Lu
1Department of Pediatrics, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei 100, Taiwan.
Insights
Group B Streptococcus (GBS) infections in infants present with varied clinical symptoms. Early-onset GBS disease shows higher rates of pneumonia and mortality compared to late-onset disease.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Group B Streptococcus (GBS) is a leading cause of invasive infections in infants.
- Understanding the clinical spectrum and outcomes of GBS infections is crucial for timely diagnosis and management.
Purpose of the Study:
- To analyze the clinical presentations, outcomes, and antibiotic susceptibilities of invasive Group B Streptococcus infections in children.
- To compare early-onset disease (EOD) and late-onset disease (LOD) in infants with GBS.
Main Methods:
- Hospital-based retrospective review of pediatric GBS infections from January 1980 to March 2000.
- Analysis of clinical data, including onset, symptoms, manifestations, and outcomes.
- Antimicrobial susceptibility testing of GBS strains.
Main Results:
- Of 25 infants, 9 had EOD and 12 had LOD. EOD cases often presented on day 1 of life, with higher rates of pneumonia (66%) and case-fatality (33.3%).
- LOD was predominantly meningitis (77%), with severe sequelae in 40%. Common symptoms included fever, poor activity, respiratory distress, lethargy, and irritability.
- All tested strains were susceptible to penicillin, ampicillin, cefotaxime, and vancomycin; variable susceptibility was noted for erythromycin (62%) and clindamycin (75%). Type III GBS strains were most common.
Conclusions:
- GBS infections in infants exhibit distinct clinical patterns for early-onset and late-onset disease.
- Prompt recognition and appropriate antibiotic therapy are essential, considering potential resistance patterns.
- Type III GBS strains are prevalent and require continued surveillance for antibiotic resistance.
Abstract:
In this hospital-based review, clinical presentations associated with Group B streptococcus (GBS) infections in children occurring between January 1980 and March 2000 were analyzed. Among the 25 infants with invasive group B streptococcal infections, 9 (36%) were early onset diseases (EOD), 12 (48%) were late onset diseases (LOD), and 4 (16%) occurred beyond the third month of life. Eight of the nine (89%) EOD cases manifested during the first day of life and three (33%) were premature births. Common presentations in GBS infection were fever (75%), poor activity (25%), respiratory distress (25%), lethargy (20%), and irritability (20%). Seizure occurred in 31% of infants with meningitis. Pneumonia (66%) and case-fatality rate (33.3%) were significantly higher in EOD than in LOD. Meningitis was the major manifestation (77%) of LOD and had severe sequelae in 40% of cases. Eight strains were assayed for antibiotic sensitivity and they were all susceptible to penicillin, ampicillin, cefotaxime, and vancomycin. The susceptibilities to erythromycin and clindamycin were 62% and 75%, respectively. Most of the strains from blood or cerebrospinal fluid were type III.
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