Negri bodies are found in –
**Core Concept**
Negri bodies are characteristic intracytoplasmic inclusions found in the neurons of individuals infected with Rabies virus. They are formed due to the accumulation of viral nucleocapsid proteins within the neuronal cytoplasm.
**Why the Correct Answer is Right**
Negri bodies are a hallmark of rabies infection, and their presence is a diagnostic indicator of the disease. The viral nucleocapsid proteins accumulate within the neuronal cytoplasm, leading to the formation of these characteristic inclusions. The presence of Negri bodies in the brain tissue is a key feature of rabies, and their identification is used to confirm the diagnosis.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Negri bodies are not typically associated with other viral infections that affect the central nervous system, such as herpes simplex encephalitis or Japanese encephalitis.
**Option B:** This option is incorrect because Negri bodies are not found in the neurons of individuals infected with other viral diseases, such as poliomyelitis or measles.
**Option C:** This option is incorrect because Negri bodies are not characteristic of bacterial infections of the central nervous system, such as bacterial meningitis or tetanus.
**Clinical Pearl / High-Yield Fact**
The presence of Negri bodies in the brain tissue is a key diagnostic feature of rabies, and their identification is used to confirm the diagnosis. It is essential to consider rabies in the differential diagnosis of patients presenting with symptoms of encephalitis or meningitis, especially if they have a history of exposure to an animal that may be infected with rabies.
**Correct Answer:** C.