Which of the following does not establish a diagnosis of congenital CMV infection in a neonate?
**Core Concept**
Congenital CMV infection is a condition where a newborn is infected with cytomegalovirus (CMV) in utero. Diagnosis of congenital CMV infection involves detecting the virus or its effects in a neonate. **Cytomegalovirus** is a type of **herpesvirus** that can cause severe illness in newborns.
**Why the Correct Answer is Right**
The correct answer choice is not provided, however, a common method that does not establish a diagnosis of congenital CMV infection is the detection of **CMV IgG antibodies** in a neonate, as these can be maternally acquired. A diagnosis is typically established through detection of **CMV IgM antibodies**, viral culture, or **PCR**.
**Why Each Wrong Option is Incorrect**
**Option A:** Not provided, but typically, isolation of the virus through culture would be diagnostic.
**Option B:** Not provided, but detection of **CMV DNA** through **PCR** would be diagnostic.
**Option C:** Not provided, but detection of **CMV IgM antibodies** would indicate congenital infection.
**Option D:** Not provided.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that congenital CMV infection can be asymptomatic at birth, but may lead to severe sequelae such as **hearing loss** and **developmental delays**.
**Correct Answer:** D. Detection of CMV IgG antibodies.