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Tracking R of COVID-19: A new real-time estimation using the Kalman filter

Fig 3

and policy interventions: Lockdowns.

Estimated effective reproduction number () one week before and three weeks after a lockdown is introduced in a country. The original sample consists of 14 European countries studied by Flaxman et al [25]. Heteroskedasticity-robust confidence bounds are shown by the shaded areas.

Fig 3

doi: https://doi.org/10.1371/journal.pone.0244474.g003