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Date and week ranges of the three crisis stages in Macao.
| Crisis Stage | Date Range | Week Range (of Calendar Year 2020) |
|---|---|---|
| Prodromal | 1 January 2020–21 January 2020 | Week 1–4 |
| Acute | 22 January 2020–25 April 2020 | Week 4–17 |
| Chronic | 26 April 2020–31 October 2020 | Week 18–44 |
