A cook prepares sandwiches for 10 people going for a picnic. Eight out of them develop severe gastroenteritis within 4 to 6 hours of consuming the sandwiches. It is likely that on investigation the cook is found to be a carrier of

Question

Image below highlights jugular foramen. Which of the following structures do not pass through the marked structure “A”?

Answer 1

The main clue here is speed. Eight of ten people fell sick only 4 to 6 hours after the meal, and that timing alone rules most of the options out.

Salmonella typhi: typhoid takes one to three weeks to show up, and even ordinary Salmonella food poisoning usually takes half a day or more. Far too slow for this outbreak.
Vibrio cholerae: cholera usually spreads through contaminated water, not a single batch of sandwiches, and its incubation runs from several hours up to a few days. It does not fit a sharp point-source outbreak like this.
Entamoeba histolytica: amoebic dysentery develops over days to weeks, nowhere close to a 4 to 6 hour window.
Staphylococcus aureus: this organism commonly lives on the skin and in the nose of healthy people. A cook who carries it can contaminate food while preparing it. Left at room temperature, the bacteria grow and release a heat stable toxin into the food. Eating the toxin brings on sudden vomiting and diarrhoea within just 1 to 6 hours, matching the timeline exactly.

Since the outbreak struck so fast, it has to be a pre-formed toxin already sitting in the sandwiches, and Staphylococcus aureus is the organism best known for causing this pattern through food handler carriage.

Let's summarize:

A short incubation of a few hours means a toxin was already in the food before it was eaten.
Salmonella, Vibrio, and Entamoeba all need much longer to cause symptoms.
Staphylococcus aureus carried by a food handler is the classic cause of rapid onset food poisoning like this.

So the cook is most likely a carrier of Staphylococcus aureus, option 4.

Answer 2

The main clue here is speed. Eight of ten people fell sick only 4 to 6 hours after the meal, and that timing alone rules most of the options out.

Salmonella typhi: typhoid takes one to three weeks to show up, and even ordinary Salmonella food poisoning usually takes half a day or more. Far too slow for this outbreak.
Vibrio cholerae: cholera usually spreads through contaminated water, not a single batch of sandwiches, and its incubation runs from several hours up to a few days. It does not fit a sharp point-source outbreak like this.
Entamoeba histolytica: amoebic dysentery develops over days to weeks, nowhere close to a 4 to 6 hour window.
Staphylococcus aureus: this organism commonly lives on the skin and in the nose of healthy people. A cook who carries it can contaminate food while preparing it. Left at room temperature, the bacteria grow and release a heat stable toxin into the food. Eating the toxin brings on sudden vomiting and diarrhoea within just 1 to 6 hours, matching the timeline exactly.

Since the outbreak struck so fast, it has to be a pre-formed toxin already sitting in the sandwiches, and Staphylococcus aureus is the organism best known for causing this pattern through food handler carriage.

Let's summarize:

A short incubation of a few hours means a toxin was already in the food before it was eaten.
Salmonella, Vibrio, and Entamoeba all need much longer to cause symptoms.
Staphylococcus aureus carried by a food handler is the classic cause of rapid onset food poisoning like this.

So the cook is most likely a carrier of Staphylococcus aureus, option 4.

A cook prepares sandwiches for 10 people going for a picnic. Eight out of them develop severe gastroenteritis within 4 to 6 hours of consuming the sandwiches. It is likely that on investigation the cook is found to be a carrier of

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The Correct Option is D

Solution and Explanation

Questions Asked in NEET (PG) exam