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Group B streptococcal cellulitis in infants: a disease modified by prior antibiotic therapy or hospitalization?
1Department of Pediatrics, University of Washington, Seattle.
Insights
Hospitalization and IV antibiotic treatment may increase the risk of group B streptococcal cellulitis in infants. This finding is crucial for understanding and preventing invasive group B streptococcal infections.
Area of Science:
- Pediatrics
- Infectious Diseases
- Neonatology
Background:
- Group B Streptococcus (GBS) is a leading cause of serious infections in newborns and infants.
- Late-onset GBS infections typically manifest after two weeks of age.
- Cellulitis is a less common but significant manifestation of GBS infection.
Purpose of the Study:
- To investigate potential risk factors for group B streptococcal cellulitis in hospitalized infants.
- To compare characteristics of infants with GBS cellulitis to other late-onset GBS infections.
Main Methods:
- Retrospective review of 78 cases of GBS infections in children from 1981-1985.
- Identification of five cases of GBS cellulitis in infants.
- Analysis of patient history, including prior antibiotic treatment and previous GBS infections.
Main Results:
- Five cases of GBS cellulitis were identified in infants aged 4-11 weeks.
- All infants with GBS cellulitis had prior hospitalization and intravenous antibiotic treatment.
- A significantly higher proportion of infants with GBS cellulitis received prior IV antibiotics compared to other late-onset GBS infections (P < .001).
Conclusions:
- Hospitalization and parenteral antibiotic therapy may represent a risk factor for developing group B streptococcal cellulitis.
- Further research is warranted to elucidate the mechanisms behind this association.
- These findings may inform strategies for preventing GBS infections in vulnerable infant populations.
Abstract:
Among 78 cases of group B streptococcal infections in children hospitalized at our institution during 1981 to 1985, five cases of cellulitis in infants were identified. Age at onset was 4 to 11 weeks. Group B streptococci were isolated from each of two aspirate cultures, all four blood cultures obtained before administering antibiotics, and none of four spinal fluid cultures obtained. All five infants had previously been treated with IV antibiotics in the hospital. Two infants had been previously treated for group B streptococcal infections (one each meningitis and neonatal sepsis). In contrast, among the 29 other patients with late-onset (2 weeks of age or older) group B streptococcal infection, four had prior treatment with IV antibiotics (P less than .001). These data suggest that hospitalization and/or parenteral antibiotic therapy may be a risk factor for development of group B streptococcal cellulitis.
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