**Question:** Food poisoning has occurred due to ingestion of contaminated fired rice, most likely organism

**Core Concept:** Food poisoning is a common gastrointestinal illness caused by the ingestion of contaminated food or water, leading to symptoms such as diarrhoea, abdominal cramps, and vomiting. The most common causative organisms are bacteria, viruses, or parasites.

**Why the Correct Answer is Right:** In this scenario, the most likely cause of food poisoning from contaminated fired rice is bacterial contamination. Among the given options, option D (Salmonella) is the correct answer. Salmonella is a common cause of foodborne illnesses, particularly in undercooked or improperly handled poultry, eggs, and meat products. In this case, Salmonella contamination in the cooked rice is the most probable cause of the outbreak.

**Why Each Wrong Option is Incorrect:**

A. Staphylococcus aureus: This option is incorrect because staphylococci are usually found on the skin and mucous membranes, not in food. They are more commonly associated with food poisoning caused by contaminated dairy products, meats, and vegetables.

B. Escherichia coli (E. Coli): While E. Coli can cause food poisoning, it is typically associated with undercooked beef, contaminated milk, or contaminated water. It is less likely to contaminate cooked rice.

C. Campylobacter jejuni: This option is incorrect as Campylobacter is usually transmitted through contaminated poultry, milk, or unpasteurized dairy products, and is less likely to contaminate cooked rice.

D. Salmonella: As mentioned earlier, Salmonella is a common cause of food poisoning from undercooked or improperly handled poultry, eggs, and meat products. In this case, Salmonella contamination in the cooked rice is the most probable cause of the outbreak.

**Clinical Pearl:** To prevent food poisoning from contaminated cooked rice, ensure proper cooking methods and avoid consuming raw or undercooked rice, particularly from unknown sources or improperly stored food.

**Correct Answer:** Salmonella (D)

**Correct Explanation:** Salmonella is a gram-negative, facultatively anaerobic, rod-shaped bacterium that can contaminate food products, particularly poultry, eggs, and meat. Salmonella species are responsible for food poisoning due to contaminated food items. In this scenario, the consumption of contaminated cooked rice is the most probable cause of the outbreak.