An image depicting fruit bats (Pteropus species) along with the life cycle of the Nipah virus was shown. Which of the following statements regarding the Nipah virus is correct?

1. A

   Cause encephalitis

2. B

   100% mortality once clinical symptoms appear

3. C

   DNA virus

4. D

   Humans are the most important reservoir

Appeared in: INI-CET EXAM -2025

Explanation

• Nipah virus (NiV) infection is a known cause of severe and often fatal encephalitis (inflammation of the brain).
• Initial symptoms like fever and headache can rapidly progress to drowsiness, disorientation, and mental confusion.
• In severe cases, acute encephalitis can lead to coma within 24-48 hours, highlighting the virus's potent neurotropic effects.

Why Other Options Were Wrong

• Option B: The statement of 100% mortality is an exaggeration. While Nipah virus has a very high case fatality rate, it is not absolute.
• Option C: Nipah virus is an RNA virus, not a DNA virus.
• Option D: The image and established scientific fact identify fruit bats of the genus Pteropus as the natural reservoir for Nipah virus.

Related Visual

• Visual 1: Diagram - A flowchart illustrating the transmission cycle of Nipah virus, from fruit bats to intermediate hosts (like pigs) and humans, as well as direct bat-to-human and human-to-human transmission routes.
• Visual 2: Map - A world map highlighting regions with known Nipah virus outbreaks, primarily in South and Southeast Asia (e.g., Malaysia, Singapore, Bangladesh, India).

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Characteristics of Nipah Virus infection as background academic context rather than a clinical decision trigger.
• Nurses must implement strict infection control measures, including contact and droplet precautions, when caring for a patient with suspected or confirmed Nipah virus to prevent nosocomial spread.
• Nursing care is primarily supportive, focusing on managing fever, neurological symptoms (like seizures), and providing respiratory support for patients with severe respiratory distress.
• Public health education is a key nursing role, especially in at-risk areas, teaching communities to avoid consuming raw date palm sap and to ensure fruits are washed thoroughly and not bat-bitten.

How to Approach the Question

• First, analyze the question and the provided image description. The mention of 'fruit bats (Pteropus species)' is a major clue about the virus's origin and reservoir.
• Evaluate each option systematically. Use the clue from the image to immediately assess the option about the reservoir (Option D). Since the image points to bats, it's highly unlikely humans are the main reservoir.
• Next, recall or deduce key characteristics of viral diseases. Consider the severity (mortality), the type of genetic material (DNA/RNA), and the primary clinical manifestation.
• Assess the absoluteness of the options. A statement like '100% mortality' (Option B) is often incorrect in medicine, as outcomes can vary. Look for more nuanced and commonly known facts.
• Focus on the most well-known feature of Nipah virus, which is its ability to cause severe brain inflammation (encephalitis). This makes Option A a strong candidate.
• Finally, confirm your choice by eliminating the other options based on factual inaccuracies regarding the virus's classification (RNA, not DNA) and epidemiology (bats, not humans, are the reservoir).

Concept Tested & Keywords

• Concept Tested: Characteristics of Nipah Virus infection
• Stem keywords: Nipah virus, fruit bats, Pteropus, encephalitis
• Lead-in keywords: correct
• Clinical cues: Image depicting fruit bats as the source of the virus.

Question ID

QeHkz0h-VI1SwlyW00pQpY

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