What is the correct sequence of steps from a person eating contaminated food to confirming a case as part of an outbreak?

What is the correct sequence of steps from a person eating contaminated food to confirming a case as part of an outbreak?

• A. Eats contaminated food; Stool sample collected; Becomes ill; Salmonella identified; Public Health Lab receives sample; Case confirmed
• B. Becomes ill; Eats contaminated food; Stool sample collected; Salmonella identified; Public Health Lab receives sample; Case confirmed
• C. Eats contaminated food; Becomes ill; Stool sample collected; Salmonella identified; Public Health Lab receives sample; Case confirmed
• D. Eats contaminated food; Becomes ill; Salmonella identified; Stool sample collected; Public Health Lab receives sample; Case confirmed

Answer: (C)

Starting with exposure to a contaminated food item, the steps unfold in a logical flow: after the exposure, illness develops following incubation, a stool sample is collected to test for the pathogen, the laboratory confirms Salmonella in that specimen, the public health laboratory receives the sample, and finally the case is confirmed based on the laboratory result. This sequence fits real-world practice because you can’t identify the pathogen or officially confirm a case until the specimen is collected and analyzed, and the illness appears only after exposure. The other sequences misorder exposure and illness or place laboratory identification before the sample has even been received for testing, which wouldn’t reflect how confirmation is actually established.

Starting with exposure to a contaminated food item, the steps unfold in a logical flow: after the exposure, illness develops following incubation, a stool sample is collected to test for the pathogen, the laboratory confirms Salmonella in that specimen, the public health laboratory receives the sample, and finally the case is confirmed based on the laboratory result. This sequence fits real-world practice because you can’t identify the pathogen or officially confirm a case until the specimen is collected and analyzed, and the illness appears only after exposure. The other sequences misorder exposure and illness or place laboratory identification before the sample has even been received for testing, which wouldn’t reflect how confirmation is actually established.