Fig. 3From: When schools were open for in-person teaching during the COVID-19 pandemic - the nordic experience on control measures and transmission in schools during the delta waveNumber and distribution of new clusters in Denmark (A) and Norway (B) per two-week periods, stratified by cluster size, and incidence (new cases per 100.000) in the total population. Week 32–41 (Aug 9th – Oct 17th), 2021Back to article page