What is the correct prevalence rate of influenza cases among 300 students if there are six known cases?

• A. 2%
• B. 5%
• C. 10%
• D. 12%

Answer: (A)

To determine the prevalence rate of influenza cases among the 300 students, you calculate the percentage of students who are known to have the disease. This is done by dividing the number of cases by the total number of students and then multiplying by 100 to convert it to a percentage.

In this scenario, there are six known cases of influenza among 300 students. The calculation is as follows:

(6 cases / 300 students) × 100 = 2%.

This result indicates that 2% of the students are infected with influenza. Thus, the correct answer reflects the proper calculation of prevalence based on the provided figures, illustrating a common method used in epidemiology to assess the rate of disease within a specific population. Other options represent different percentages that do not align with the calculations from the stated values.