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Prediction for the infected compartment in Emilia-Romagna from 2021/03/22 to 2021/04/20. Data (magenta circles), prediction with β(t) interpolating the values of β between the red and blue stars (blue continuous line), prediction with β(t) calibrated in the last interval Δ4. (a) SEIRDV_pwl (b) SEIRDV_pwe.
