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Adopted values for transmission rate mitigation factor based on social measures (Belgium).
| Time period | ψ(t) |
|---|---|
| Before March 17th 2020 | 0 |
| March 17th–May 31st 2020 | 0.9 |
| June 1st−31st July2020 | 0.7 |
| July 31st–October 16th 2020 | 0.4 |
| October 16th–December 31st 2020 | 0.8 |
| December 31st 2020–March 15th 2021 | 0.7 |
