Fig. 1From: Retrospective analysis of SARS-CoV-2 omicron invasion over delta in French regions in 2021–22: a status-based multi-variant modelA A basic overview of the model. B The model paramterization possibilities. C As an illustration, percentages of delta and omicron obtained from Santé Publique France for the Ile-de-France region with the 20 day window of opportunity around the inflection point as it has been chosen for this modelling studyBack to article page