An infection control team is investigating an outbreak of *Listeria monocytogenes* at an assisted-living facility. On the day of a suspected food exposure event, the facility had exactly residents, all of whom consumed the implicated meal. Over the subsequent four weeks, residents developed culture-confirmed listeriosis. Among the residents who contracted the infection, died directly from complications of the disease. During this same four-week period, other residents died from conditions entirely unrelated to the outbreak. Based on these data, what is the case fatality rate of listeriosis in this specific outbreak?
- A
- B
- C
- Cevap
- E
Cevap
The case fatality rate represents the lethality of a condition and is defined as the percentage of individuals diagnosed with a specific disease who die from that disease. In this scenario, residents contracted listeriosis and died from it. Therefore, the case fatality rate is , which equals or .
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Anahtar Kavram
The case fatality rate (CFR) is a measure of disease severity, calculated by dividing the number of deaths caused by a specific disease by the total number of individuals diagnosed with that disease during the same time period.