Epidemiology & Prevention USMLE Step 1 Practice Question
A tropical region has consistently reported 15 to 20 malaria cases per 100,000 people annually for over a decade with minimal year-to-year variation. Recent surveillance data confirms stable transmission rates without seasonal spikes. Rapid diagnostic tests show positive rates of 2-3% in the screened population. No recent epidemic clusters or geographic spread has been documented. Public health officials classify this disease pattern in the region as which of the following?
Answer choices
- AEpidemic disease
- BAttack rate
- CPandemic disease
- DEndemic diseaseCorrect answer
- EPoint-source outbreak
- FSporadic disease
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