Fig. 1
From: Estimation of undetected asymptomatic infections of COVID-19: a mathematical modeling approach
Epidemiological data on COVID-19 in Korea (2020–2022). (A) Daily confirmed cases. (B) vaccination coverage and variant proportions. Blue shading indicates the period with non-pharmaceutical interventions (NPIs) only, while orange and green shading represent the dominance of the Delta and Omicron variants, respectively.
