Research Article
Analysis and Parametrical Estimation with Real COVID-19 Data of a New Extended SEIR Epidemic Model with Quarantined Individuals
Table 4
Estimated parametrical values.
| | Dates | Natural positivity rate λ (days−1) | Average number of close contacts per day cr | Tracing the effectiveness p1 |
| | [29/02/2020, 10/03/2020] | = 0.685 | = 12.88 | = 0.06 |
| | [11/03/2020, 18/03/2020] | = 0.643 | = 4.88 | = 0.9 |
| | [19/03/2020, 28/05/2020] | = 0.938 | = 2.07 | = 0.25 |
| | [28/05/2020, 30/06/2020] | = 0.859 | = 4.15 | = 0.9 |
| | [17/07/2020, 06/08/2020] | = 0.930 | = 7.55 | = 0.06 |
| | [10/08/2020, 02/09/2020] | = 0.932 | = 4.81 | = 0.02 |
| | [04/09/2020, 17/09/2020] | = 0.737 | = 4.63 | = 0.42 |
| | [17/09/2020, 14/10/2020] | = 0.871 | = 3.21 | = 0.28 |
| | [15/10/2020, 30/10/2020] | = 0.932 | = 6.10 | = 0.14 |
| | [30/10/2020, 09/11/2020] | = 0.933 | = 5.57 | = 0.25 |
| | [09/11/2020, 23/11/2020] | = 0.888 | = 4.68 | = 0.36 |
| | [25/11/2020, 13/12/2020] | = 0.744 | = 3.14 | = 1 |
| | [19/12/2020, 06/01/2021] | = 0.628 | = 6.38 | = 0.78 |
| | [07/01/2021, 20/01/2021] | = 0.881 | = 5.06 | = 0.05 |
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