Fig. 3From: Comparing the incidence of SARS-CoV-2 across age groups considering sampling biases - use of testing data of autumn 2021 in BelgiumEvolution of the proportion of the tested population (black line) and evolution of the proportion of the different indications for testing over time (4 October 2021–26 December 2021) and by age group j (age 0–5, 6–11, 12–17, 18–29, 30–64, 65+) in BelgiumBack to article page