**Question:** Transport medium for cholera -

A. Enteric bacteria
B. Cholera toxin
C. Cholera Vibrio
D. Cholera patient's stool

**Core Concept:**
Cholera is an acute diarrheal illness caused by the bacterium Vibrio cholerae, which produces cholera toxin. This toxin causes a significant fluid loss through the gastrointestinal tract, leading to severe dehydration and electrolyte imbalances. The primary mode of transmission of cholera is through contaminated water or food.

**Why the Correct Answer is Right:**
Cholera is primarily transmitted through the ingestion of contaminated water or food, particularly in areas with poor sanitation and hygiene practices. The correct answer, D - Cholera patient's stool, represents the mode of transmission for cholera. Vibrio cholerae, the causative agent of cholera, is often found in the fecal matter of infected individuals, leading to the spread of the disease through fecal-oral route.

**Why Each Wrong Option is Incorrect:**

A - Enteric bacteria: This option is incorrect because it refers to the entire class of bacteria causing enteric infections rather than specifically addressing the mode of transmission for cholera.

B - Cholera toxin: While cholera toxin is a key factor in the disease, it does not directly describe the mode of transmission.

C - Cholera Vibrio: This option is incorrect because it refers to the specific species of bacteria causing cholera, not the mode of transmission.

**Clinical Pearl:**
Understanding the mode of transmission for cholera is crucial for preventing the spread of the disease, particularly in endemic regions. Improving sanitation, providing access to clean water, and practicing proper food handling and hygiene can significantly reduce the risk of cholera transmission.

**Correct Answer:** D - Cholera patient's stool