A.
Wait for a definitive diagnosis before informing anyone.
✓
B.
Immediately isolate the patient, collect samples, and notify the local infectious disease control unit.
✓
C.
Treat symptomatically and discharge.
✓
D.
Refer to a general practitioner for routine follow-up.
✓
A.
Many false positive results.
✓
B.
Many false negative results, potentially leading to missed diagnoses.
✓
C.
Accurate diagnosis immediately.
✓
D.
No need for further testing.
✓
C.
Absolute Risk Reduction (ARR).
✓
D.
Number Needed to Harm (NNH).
✓
A.
Advise people to boil water before use.
✓
B.
Issue an immediate "boil water" advisory, identify affected areas, and coordinate with healthcare providers for case management.
✓
C.
Wait for lab confirmation from every affected individual.
✓
D.
Only provide bottled water to a few households.
✓
