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Group B streptococcal infection: when does vertical transmission take place?
1Department of Paediatrics, Ealing General Hospital, Middlesex.
Summary
Group B streptococcus infection was identified in a deceased infant using CD45 isoform analysis. This perinatal infection preceded intrapartum asphyxia, indicating it was the primary cause of death.
Area of Science:
- Neonatal immunology
- Infectious disease pathology
- Perinatal medicine
Background:
- Assessing the timing of neonatal infections is crucial for understanding mortality.
- Group B Streptococcus (GBS) is a significant cause of neonatal sepsis and mortality.
- Low Apgar scores in newborns can indicate perinatal distress.
Observation:
- CD45 isoform expression was analyzed in a deceased infant with low Apgar scores.
- The infant was diagnosed with Group B streptococci infection.
- The analysis aimed to determine the temporal relationship between infection and perinatal events.
Findings:
- CD45 isoform analysis indicated GBS infection was present over 24 hours prior to delivery.
- This timing suggests a perinatal infection, not an intrapartum event.
- The perinatal infection was identified as the primary event preceding intrapartum asphyxia.
Implications:
- CD45 isoform analysis can be a valuable tool for retrospective diagnosis of neonatal infections.
- Distinguishing perinatal infection from intrapartum events is critical for accurate cause-of-death determination in neonates.
- Understanding the timing of GBS infection can inform strategies for prevention and management.