Ace the Certified in Public Health (CPH) Exam 2026 – Launch Your Health Hero Journey!

Question: 1 / 400

Given a population of 5,000 where 100 people got sick from E. coli and 15 died, what is the case fatality rate?

15 deaths.

20 per 1,000.

3 per 1,000.

150 per 1,000.

To determine the case fatality rate (CFR), you need to calculate the proportion of deaths among those who were diagnosed with the disease. The formula used for calculating the case fatality rate is:

\[ \text{CFR} = \left(\frac{\text{Number of deaths due to the disease}}{\text{Number of confirmed cases of the disease}}\right) \times 1000 \]

In this scenario, the number of confirmed cases is 100 (the individuals who got sick from E. coli), and the number of deaths is 15.

Applying the values to the formula:

\[ \text{CFR} = \left(\frac{15}{100}\right) \times 1000 \]

This simplifies to:

\[ \text{CFR} = 0.15 \times 1000 = 150 \text{ per 1,000} \]

The correct calculation leads to the understanding that for every 1,000 individuals who were diagnosed with E. coli, 150 died. This figure illustrates the severity of the disease within that specific population of confirmed cases, providing vital information for public health responses and controlling outbreaks.

Get further explanation with Examzify DeepDiveBeta
Next Question

Report this question

Download Certified in Public Health (CPH) Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy