## **Core Concept**
The core concept here revolves around the management of a newborn's risk of acquiring varicella-zoster virus (VZV) infection from a mother who has developed chickenpox (varicella) around the time of delivery. Chickenpox is caused by the varicella-zoster virus, and its timing in relation to delivery poses a significant risk to the newborn due to the lack of protective maternal antibodies being transferred to the fetus.

## **Why the Correct Answer is Right**
The best method to prevent infection in the neonate involves administering **varicella-zoster immune globulin (VariZIG)** to the newborn. This is because the newborn is at high risk of severe varicella infection if exposed to the virus around the time of birth, especially if the mother develops the rash within 5 days before or after delivery. VariZIG provides temporary protection against varicella and can help prevent or modify the disease in the newborn. It is specifically indicated for high-risk individuals, such as newborns exposed to VZV.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is not provided, but typically, incorrect options might include administering antiviral medications to the mother or newborn without specifying the need for immune globulin.
- **Option B:** This option is also not provided, but another incorrect approach might involve delaying delivery to reduce the risk of neonatal varicella, which is not always feasible or the best strategy.
- **Option C:** Similarly, this option's content is unknown, but an incorrect approach could involve immediate vaccination of the newborn with the varicella vaccine, which is not indicated in this acute setting and does not provide immediate protection.

## **Clinical Pearl / High-Yield Fact**
A critical point to remember is that if a pregnant woman develops varicella (chickenpox) within 5 days before or after delivery, the newborn is at high risk for severe varicella. Administering **varicella-zoster immune globulin (VariZIG)** to the newborn within 96 hours of exposure can help prevent or modify the disease. This highlights the importance of early identification and management of at-risk newborns.

## **Correct Answer:** D. Administering varicella-zoster immune globulin to the neonate.