Study of Group B Streptococcus in Mothers and Newborns
Author Information
Author(s): Madzivhandila Mashudu, Adrian Peter V., Cutland Clare L., Kuwanda Locadiah, Schrag Stephanie J., Madhi Shabir A.
Primary Institution: University of Witwatersrand, Johannesburg, South Africa
Hypothesis
Understanding the serotype epidemiology of Group B Streptococcus (GBS) is necessary to determine the potential coverage of serotype-specific GBS vaccines.
Conclusion
An anti-GBS vaccine including serotypes Ia, Ib, and III could potentially prevent a significant percentage of GBS associated with maternal vaginal colonization and invasive disease in neonates.
Supporting Evidence
- GBS was identified in 52.4% of newborns born to mothers with GBS vaginal colonization.
- Serotype III was the most common invasive serotype in newborns less than 7 days old.
- The study found a high concordance of serotypes between colonized mothers and their newborns.
Takeaway
This study looked at how a type of bacteria called Group B Streptococcus affects babies and their mothers, and found that a vaccine could help protect them.
Methodology
The study involved identifying GBS isolates from mothers and newborns through vaginal swabbing and laboratory surveillance, followed by serotyping.
Potential Biases
Potential bias in identifying maternal colonization and the possibility of GBS acquisition from non-maternal sources.
Limitations
The study may have underestimated GBS colonization due to the exclusion of rectal swabs and the timing of swabbing during labor.
Participant Demographics
The study involved mothers and newborns from an urban population in Soweto, South Africa.
Statistical Information
P-Value
p<0.0001
Confidence Interval
95%CI 0.31–0.77
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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