Which bacteria is responsible for the greatest number of illnesses and causes the greatest number of hospitalizations and deaths?
Clostridium Perfringens
Salmonella
Campylobacter
Listeria Monocytogenes
The Correct Answer is B
A. Clostridium perfringens is a common cause of foodborne illness, often associated with improperly stored cooked meats and gravies. While it causes many cases of mild gastrointestinal illness, it rarely leads to hospitalization or death.
B. Salmonella is responsible for the largest number of foodborne illnesses in the United States and causes the greatest number of hospitalizations and deaths among foodborne pathogens. It commonly contaminates eggs, poultry, meat, and sometimes produce. Infections can range from mild gastroenteritis to severe systemic illness, particularly in young children, older adults, and immunocompromised individuals, leading to hospitalization or, in severe cases, death.
C. Campylobacter is a leading cause of bacterial gastroenteritis and is often linked to undercooked poultry. While it can cause significant illness and sometimes complications like Guillain-Barré syndrome, it results in fewer hospitalizations and deaths than Salmonella.
D. Listeria monocytogenes causes severe illness in vulnerable populations, such as pregnant women, newborns, and the elderly, and can lead to miscarriage or meningitis. However, it is relatively rare compared to Salmonella and does not account for the greatest number of overall cases.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Traditional methods of food preservation—salting, sugaring, drying, and smoking—have been used for centuries and remain in use today. Salting draws moisture out of foods to inhibit bacterial growth. Sugaring, used in jams and candies, reduces water activity, making the environment unsuitable for microbes. Drying removes moisture, preventing spoilage, while smoking imparts flavor and introduces compounds that inhibit microbial growth. These methods were developed long before modern technology and continue to be effective, particularly in artisanal and emergency food preservation.
B. Stabilizers, texturizers, and emulsifiers are modern food additives used to improve texture, consistency, and appearance in processed foods, not traditional preservation methods.
C. Preservatives such as vitamin C (ascorbic acid) and vitamin E (tocopherols) are modern chemical methods to prevent oxidation and spoilage, and were not historically used prior to technological advances.
D. Mechanical refrigeration is a technological advancement that emerged in the 19th and 20th centuries. While highly effective, it is not considered a traditional method of food preservation.
Correct Answer is A
Explanation
A. The “danger zone” for bacterial growth is between 40°F and 140°F (4°C–60°C). Within this temperature range, bacteria such as Salmonella, E. coli, and Listeria can multiply rapidly, increasing the risk of foodborne illness. Foods should be kept below 40°F in refrigeration or above 140°F during cooking or holding to prevent bacterial proliferation.
B. 35°F–155°F is slightly outside the standard danger zone range. Temperatures below 40°F are generally safe, and 155°F exceeds the threshold where most bacteria are destroyed.
C. 30°F–130°F is too low and does not accurately reflect the range in which bacteria multiply rapidly. Foods at 30°F are generally frozen or safe from bacterial growth.
D. 50°F–150°F does not reflect the standardized danger zone. Bacterial growth can occur at lower temperatures, starting around 40°F, and most pathogens are destroyed above 140°F.
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