During an outbreak, investigators calculate the proportion of people who became ill among those who attended a specific meal. What measure are they calculating?
Correct answer: A. Attack rate
- A. Attack rate
- B. Case fatality rate
- C. Prevalence ratio
- D. Crude birth rate
Explanation
The attack rate is the proportion of an exposed group that develops illness during an outbreak. Case fatality rate measures deaths among cases, while prevalence describes existing disease in a population at a specified time.
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About Communicable Diseases
Communicable diseases are studied through the chain of infection, including the agent, reservoir, mode of transmission, portal of entry and susceptible host. Coverage includes isolation, disinfection, immunization, surveillance and outbreak control, with attention to diseases such as tuberculosis, malaria, hepatitis, polio and diarrheal infections.
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