Biostatistics & Study Design USMLE Step 1 Practice Question
A new antiviral medication is introduced for a chronic infection in a city of 1 million people. The drug does not prevent new infections, but it markedly shortens the duration of symptomatic illness and improves recovery. One year later, epidemiologists compare disease frequency with the year before the drug was introduced. Which of the following changes is most likely?
Answer choices
- ADecreased incidence and unchanged prevalence
- BUnchanged incidence and unchanged prevalence
- CIncreased incidence and increased prevalence
- DDecreased incidence and decreased prevalence
- EUnchanged incidence and decreased prevalenceCorrect answer
- FUnchanged incidence and increased prevalence
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