Certified Professional Food Safety (CP-FS) Practice Exam

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Which bacteria is known to cause watery diarrhea and is most commonly associated with raw chicken?

Escherichia coli
Salmonella spp.
Campylobacter jejuni
Listeria monocytogenes

The correct answer is: Campylobacter jejuni

The correct answer is Campylobacter jejuni, which is indeed known for causing watery diarrhea and is commonly associated with the consumption of raw or undercooked chicken. Campylobacter is a leading cause of bacterial gastroenteritis worldwide. The organism is typically found in the intestines of poultry, making raw chicken one of the major sources of infection when proper food safety practices are not followed, such as cooking poultry to the correct internal temperature or preventing cross-contamination in the kitchen. Understandably, individuals might confuse it with other bacteria such as Salmonella spp., which also causes diarrhea and is prevalent in poultry products. However, while both can lead to serious gastrointestinal infection, Campylobacter jejuni has a stronger association specifically with raw chicken. The other choices, Escherichia coli and Listeria monocytogenes, are associated with different food sources and illnesses, further distinguishing Campylobacter's specific link to chicken.