Fig. 4
ITS models of ED leading to hospitalization per language region. Legend: Red: ITS model of pre-pandemic ED visits (March 1st to February 24th 2018), green: ITS model of pandemic ED visits (April 6th to February 28th 2022), blue: counterfactual extrapolation of the further course of ED visits based on the ITS model of pre-pandemic data, solid line: onset of the first phase of nationwide NPIs on March 16th 2020, dashed line: transition period of ± 3 weeks around March 16th. ZH: Zurich (German speaking part), GE: Geneva (French speaking part), TI: Ticino (Italian speaking part)