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Updated: Jul 14, 2026

A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
Recurrent neonatal group B streptococcal disease associated with infected breast milk
Lin-Yu Wang1, Chun-Ta Chen, Won-Hsiung Liu
1Department of Pediatrics, Chi-Mei Foundation Medical Center, Tainan, Taiwan.
Abstract:
Group B streptococcus (GBS) is a major cause of severe systemic infections among the newborn. Both recurrent and maternal mastitis-associated, group B streptococcus diseases are uncommon. Persistence of GBS colonization of infants' mucous membrane is postulated to influence the pathogeneses of recurrent GBS infection. The authors describe a term infant who was treated for GBS sepsis and meningitis and then later developed recurrent GBS sepsis, without meningitis, due to feeding of infected breast milk. Randomly amplified polymorphic DNA polymerase chain reaction assay was performed to demonstrate that the GBS isolates from the first and second episode of infection and the maternal milk are identical. The authors conclude that transmission of GBS through breast milk should be considered in cases of recurrent neonatal GBS infection and bacterial culture of breast milk should be routinely performed in such cases.
Insights
Group B Streptococcus (GBS) can cause severe newborn infections. This study found GBS transmission via breast milk led to recurrent infant sepsis, highlighting the need for milk screening.
Area of Science:
- Neonatal infectious diseases
- Microbiology
- Epidemiology
Background:
- Group B Streptococcus (GBS) is a leading cause of neonatal infections.
- Recurrent GBS infections in newborns are uncommon but serious.
- GBS colonization persistence may contribute to recurrent infections.
Observation:
- A term infant experienced GBS sepsis and meningitis.
- The infant later developed recurrent GBS sepsis from infected breast milk.
- Maternal mastitis was associated with GBS in breast milk.
Findings:
- Identical GBS strains were isolated from the infant's initial and recurrent infections.
- The same GBS strain was identified in the mother's breast milk.
- Randomly amplified polymorphic DNA PCR confirmed isolate identity.
Implications:
- Breast milk transmission of GBS should be considered in recurrent neonatal infections.
- Routine bacterial culture of breast milk is recommended for such cases.
- This finding aids in understanding and preventing recurrent GBS disease in newborns.
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