**Core Concept**
The question refers to the emergence of a new infectious disease in India, highlighting the need to identify and understand the causative agent, its transmission dynamics, and its impact on public health. Emerging infections often result from changes in human behavior, environmental factors, or the emergence of antimicrobial resistance.

**Why the Correct Answer is Right**
The correct answer is **Nipah virus (NiV)**. Nipah virus is a zoonotic virus that primarily affects bats but can be transmitted to humans through close contact with infected animals, contaminated food, or contaminated surfaces. The virus causes severe respiratory and neurological symptoms, making it a significant public health concern. In India, NiV outbreaks have been reported in various states, with the first reported outbreak occurring in 2001 in Siliguri, West Bengal.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as there is no significant evidence of the emergence of **Rabies virus** as a new infectious disease in India in recent years.
* **Option B:** This option is incorrect as **Malaria** is not considered an emerging infection in India, although it is a significant public health concern in certain regions.
* **Option C:** This option is incorrect as **Hepatitis E** is not considered an emerging infection in India, although it is a significant cause of acute hepatitis in the country.

**Clinical Pearl / High-Yield Fact**
Nipah virus infection can be prevented through proper hygiene practices, including wearing personal protective equipment (PPE), avoiding close contact with infected animals, and ensuring proper handling and disposal of contaminated food and surfaces.

**Correct Answer: C. Nipah virus (NiV)**