Discussion
A 2 days old premature baby boy born to a 22-year-old woman developed a pneumonia, the mother was healthy but after the premature delivery she showed the symptoms of urinary tract infection. The blood specimen was taken from the baby, beta hemolytic colonies was observed in the culture plate. Which could be the possible pathogen that might have transferred from the mother to the baby and caused infection?
Answer: B
Correct answer: Streptococcus agalactiae
Group B streptococcus is carried in the maternal genital tract and is the leading cause of early onset neonatal sepsis and pneumonia, acquired as the baby passes through the birth canal. Prematurity is a recognised risk factor and maternal urinary tract infection points to heavy colonisation. The beta-haemolytic colonies are consistent, and screening in late pregnancy exists to prevent exactly this.
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