**Question:** Nipah virus is transmitted by

A. Consumption of contaminated fruit (e.g., date palm sap)
B. Direct contact with infected animals
C. Airborne transmission
D. Spread from person to person

**Correct Answer:** A. Consumption of contaminated fruit (e.g., date palm sap)

**Core Concept:** Nipah virus is an emerging zoonotic virus that primarily affects bats and other mammals, causing severe illness in humans.

**Why the Correct Answer is Right:**
Nipah virus is transmitted primarily through consumption of contaminated fruit, particularly date palm sap, that is contaminated by the saliva of infected fruit bats (genus Pteropus). The virus can persist in the sap for weeks, making it a significant risk for human infection.

**Why Each Wrong Option is Incorrect:**
A. Direct contact with infected animals (Bats) - While direct contact can lead to infection, consumption of contaminated fruit is the primary mode of transmission.
B. Airborne transmission - Nipah virus is not known to spread through airborne routes, but through consumption of contaminated food items.
C. Spread from person to person - Nipah virus does not predominantly transmit from person to person, but rather through consumption of contaminated food and direct contact with infected animals or bodily fluids.

**Clinical Pearl:** Nipah virus outbreaks have occurred in Southeast Asia and India, causing significant morbidity and mortality. To prevent infection, it is crucial to practice food safety measures, such as avoiding consumption of raw or unpasteurized date palm sap, and use protective gear when handling infected animals.

**Explanation:**

Nipah virus is a paramyxoviridae family virus, which primarily affects bats (genus Pteropus) and other mammals, including fruit bats, pigs, and humans. The virus can cause severe disease in humans, with symptoms ranging from fever, encephalitis, and respiratory distress to acute respiratory distress syndrome (ARDS) and multi-organ failure.

**Core Concept:** The virus primarily enters the human body through consumption of contaminated food items, particularly date palm sap, which becomes infected when in contact with the saliva of infected bats.

**Why the Correct Answer is Right:** The consumption of date palm sap from infected bats is the primary mode of transmission for Nipah virus in humans. Bats shed the virus through their saliva, which can contaminate the sap during collection or processing.

**Why Each Wrong Option is Incorrect:**
A) Direct contact with infected animals or bodily fluids is not the primary mode of transmission. Bats are reservoir hosts, and humans only become infected through consumption of contaminated food items.
B) Airborne transmission is not a significant mode of infection for Nipah virus. The virus is primarily transmitted through ingestion of contaminated food products.
C) Spread from person to person is not the primary mode of transmission. The virus primarily enters humans through consumption of contaminated food items, not person-to-person contact.

**Clinical Pearl:** To prevent Nipah virus infection, it is essential to practice good hygiene when handling date palm sa