Invasive Group B Streptococcal Infections in Infants
Author Information
Author(s): Poyart Claire, Réglier-Poupet Hélène, Tazi Asmaa, Billoët Annick, Dmytruk Nicolas, Bidet Philippe, Bingen Edouard, Raymond Josette, Trieu-Cuot Patrick
Primary Institution: Institut National de la Santé et de la Recherche Médicale U567
Hypothesis
What are the clinical features and molecular characteristics of group B streptococci causing neonatal invasive infections in France?
Conclusion
The study found that late-onset group B streptococcal infections are prevalent and often associated with the hypervirulent ST-17 clone.
Supporting Evidence
- 64% of the strains were from late-onset infections.
- 75% of the isolates were capsular type III.
- 80% of meningitis cases were associated with the hypervirulent clone ST-17.
- 36% of cases were early-onset disease.
- Deaths were higher in late-onset cases (14.5%) compared to early-onset cases (2.5%).
- Type III accounted for 83% of late-onset meningitis cases.
Takeaway
Group B Streptococcus can make babies very sick, and many infections are caused by a specific type of this germ that is very strong.
Methodology
Clinical data on 109 infants were analyzed, and GBS isolates were identified and characterized using various molecular techniques.
Potential Biases
Potential bias in maternal screening practices and reporting of clinical data.
Limitations
The study may not represent all cases of GBS infections due to the limited geographical scope and reliance on available clinical data.
Participant Demographics
Infants up to 4 months of age, with a male:female ratio of 0.9 for early-onset disease and 1.15 for late-onset disease.
Statistical Information
P-Value
<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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