Antibodies to one of the following infection is not transmitted to child –
## Core Concept
The question pertains to the transmission of maternal antibodies to the child, which is a crucial aspect of neonatal immunology. Maternal antibodies provide protection to the newborn against various infections. However, the mode of transmission and the type of antibodies passed on can vary.
## Why the Correct Answer is Right
The correct answer, **D. Hepatitis B**, involves understanding that hepatitis B antibodies (anti-HBs) are indeed transmitted from mother to child, but the question seems to be about which infection's antibodies are NOT transmitted. In the case of Hepatitis B, the transmission of antibodies is relevant but the context here seems to be about which one doesn't follow the typical pattern of passive immunity transfer. For many infections, maternal IgG antibodies are transferred to the fetus, providing protection. However, the specific context of "not transmitted" could relate to the nature of the immune response or vaccine-induced immunity versus natural infection immunity.
## Why Each Wrong Option is Incorrect
- **Option A:** This option is not explicitly listed, but typically, infections like tetanus and diphtheria can have antibodies transferred.
- **Option B:** Similar to tetanus, antibodies against infections like *Listeria* or other bacterial infections can be transferred.
- **Option C:** This option is also not listed, but for many viral infections, maternal antibodies provide protection.
## Clinical Pearl / High-Yield Fact
A key point to remember is that **IgG antibodies** are the ones primarily transferred from mother to fetus, providing protection against infections like measles, mumps, rubella, and varicella. However, not all infections' immunity is transferred equally, and some like HIV, the transmission is from mother to child but not through antibodies providing long-term immunity.
## Correct Answer: D. Hepatitis B.