A.
Identifying enough cases.
✓
B.
Long follow-up periods and potential loss to follow-up.
✓
C.
Controlling for confounding.
✓
D.
High cost of collecting exposure data.
✓
B.
Beneficence (balancing benefits and harms).
✓
D.
Non-maleficence only.
✓
C.
Communicable period.
✓
A.
Ask people to stop eating all processed foods.
✓
B.
Issue an immediate recall of the contaminated product, and advise consumers to discard it and seek medical attention if ill.
✓
C.
Only warn the producer of the food product.
✓
D.
Wait for all contaminated products to be consumed.
✓
A.
To confirm a diagnosis.
✓
B.
To rule out a disease (screening test to identify as many true cases as possible).
✓
C.
To avoid false positives.
✓
D.
To identify only severe cases.
✓
A.
Strength of association.
✓
A.
Number Needed to Treat (NNT).
✓
B.
Number Needed to Harm (NNH).
✓
C.
Incidence proportion (or cumulative incidence).
✓
A.
Evacuate all residents from the nursing home.
✓
B.
Implement immediate infection control measures, cohort infected individuals, and test all residents and staff for the causative agent.
✓
C.
Only treat residents who develop severe symptoms.
✓
D.
Wait for the cluster to spread to nearby nursing homes.
✓
