Fig. 2

Temporal evolution of study variables from January to December 2021 for the seven assessed provinces/territories. Legend: (A) SARS-CoV-2 variant periods and introduction dates of the Delta and Omicron variants, (B) weekly median outbreak intensity, unweighted mean of the (C) stringency index (SI), and (D) effective reproduction number (Rt) and vaccine rollout timelines. Date labels represent week start