Neonatal meningitis acquired during passage through bih canal is due to –
**Core Concept**
Neonatal meningitis is a serious infection that occurs in newborns, and understanding the causes and modes of transmission is crucial for diagnosis and management. The question highlights the concept of vertical transmission, which refers to the acquisition of an infection from mother to child during passage through the birth canal.
**Why the Correct Answer is Right**
The correct answer is due to the presence of Group B Streptococcus (GBS) in the mother's genital tract. GBS is a common cause of neonatal meningitis, and vertical transmission occurs when the bacteria are transferred from the mother to the baby during delivery. This is often due to the breakdown of the fetal membranes, allowing the bacteria to ascend into the amniotic fluid and subsequently infect the baby. The GBS bacteria can then cause a severe infection, including meningitis, in the newborn.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not directly related to the mode of transmission of neonatal meningitis. While Escherichia coli (E. coli) can cause neonatal meningitis, it is not typically acquired through vertical transmission.
**Option B:** This option is incorrect because it is not the primary cause of neonatal meningitis acquired during passage through the birth canal. While Staphylococcus aureus can cause infections in newborns, it is not typically associated with vertical transmission.
**Option C:** This option is incorrect because it is not a common cause of neonatal meningitis acquired during passage through the birth canal. While Haemophilus influenzae type b (Hib) can cause meningitis in children, it is not typically associated with vertical transmission in newborns.
**Clinical Pearl / High-Yield Fact**
It is essential to note that Group B Streptococcus (GBS) screening is a critical component of prenatal care, especially in women at high risk of carrying the bacteria. Early identification and treatment of GBS colonization can significantly reduce the risk of neonatal meningitis and other serious infections.
**Correct Answer: D. Group B Streptococcus (GBS)**