Diagnostic Workup for Suspected Norovirus in Children
Indications for Diagnostic Testing
Duration‑Based Thresholds for Workup (IDSA 2017)
| Diarrhea Duration | Recommended Action | Evidence |
|---|---|---|
| Acute < 7 days | Routine laboratory workup generally not needed in healthy, immunocompetent children. | Strong (IDSA) |
| Prolonged 7–13 days | Consider diagnostic testing. | Strong (IDSA) |
| Persistent 14–29 days | Workup strongly indicated. | Strong (IDSA) |
| Chronic ≥ 30 days | Comprehensive evaluation required. | Strong (IDSA) |