Food Manager Practice Exam

What is the most common cause of foodborne illness?

1. E. coli

2. Salmonella

3. Staphylococcus aureus

4. Listeria monocytogenes

The correct answer is: Staphylococcus aureus

The most common cause of foodborne illness is typically attributed to Salmonella. This bacterium is frequently associated with various foods, particularly undercooked poultry, eggs, and unpasteurized milk. It can lead to serious gastrointestinal illness, and it is one of the most reported pathogens linked to foodborne outbreaks. While Staphylococcus aureus can also cause foodborne illness, it is primarily related to improper food handling practices rather than being the most common overall cause. This pathogen produces toxins that can result in a quick onset of symptoms after consuming contaminated food but tends to be less prevalent as a cause of widespread illness compared to Salmonella. Escherichia coli (E. coli) and Listeria monocytogenes are significant foodborne pathogens as well, with specific associations (E. coli with undercooked beef and contaminated vegetables, and Listeria with deli meats and unpasteurized dairy). However, they do not match the frequency of outbreaks attributed to Salmonella. Understanding the prevalence of these pathogens highlights the importance of proper food handling and cooking practices to minimize the risk of foodborne illnesses.