Construct An Epidemic Curve
Use infection evidence to construct an epidemic curve step by step.
- Transmission basics: Outbreak work depends on agent, host, route, time, and place.
- Case definition: Students need a rule for who counts as a case before counting cases.
Prerequisites are inferred: pending teacher review.
Re-learn the skill with worked practice and clear examples.
Use infection evidence to construct an epidemic curve step by step.
Use the infection figure/table. Which evidence best supports a shared-source outbreak?
Reviewed- A.Several cases share the same exposure and close onset times
- B.One person feels tired with no exposure data
- C.A graph has bright colors
- D.No cases meet the definition
Show the worked solution ▾
Answer: A. Several cases share the same exposure and close onset times
- Step 1: Find shared exposure: A shared source means cases have a common exposure.
- Step 2: Check timing: Close onset times strengthen the pattern.
Why it's right: Shared exposure plus close timing supports a shared-source outbreak.
- B: One vague symptom is weak.
- C: Colors are not epidemiologic evidence.
- D: No cases means no outbreak pattern.
Aligned to Biotechnology Research and Experiments · reading level ~grade 9
- In Unit 3.1 Outbreak Evidence, this skill turns class evidence into a result another person can check.
Fill these in as you work through the lesson.
- Pathogen (disease-causing agent):
- Transmission (how a pathogen spreads):
- Reservoir (where pathogen lives):
- Case (person who fits outbreak definition):
Track the , route of transmission, time pattern, and exposed before making an outbreak claim.
- Who fits the case definition?
- What exposure do cases share?
- What timing pattern appears?
Use the infection diagram or line list to practice construct an epidemic curve.