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Comparing the incidence of SARS-CoV-2 across age groups considering sampling biases - use of testing data of autumn 2021 in Belgium by Adrien Lajot; Laura Cornelissen; Dieter Van Cauteren; Marjan Meurisse; Ruben Brondeel; Christine Dupont-Gillain is a Medicine article available to read on EtoBox.

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## Background To design efficient mitigation measures against COVID-19, understanding the transmission dynamics between different age groups was crucial. The role of children in the pandemic has been intensely debated and involves both scientific and ethical questions. To design efficient age-targeted non-pharmaceutical interventions (NPI), a good view of the incidence of the different age groups was needed. However, using Belgian testing data to infer real incidence (RI) from observed incidence (OI) or positivity ratio (PR) was not trivial. ## Methods Based on Belgian testing data collected during the Delta wave of Autumn 2021, we compared the use of different estimators of RI and analyzed their effect on comparisons between age groups. ## Results We found that the RI estimator’s choice strongly influences the comparison between age groups. ## Conclusion The widespread implementation of testing campaigns using representative population samples could help to avoid pitfalls related to the current testing strategy in Belgium and worldwide. This approach would also allow a better comparison of the data from different countries while reducing biases arising from the specificities of ea

Who reads Comparing the incidence of SARS-CoV-2 across age groups considering sampling biases - use of testing data of autumn 2021 in Belgium?

Author

Adrien Lajot; Laura Cornelissen; Dieter Van Cauteren; Marjan Meurisse; Ruben Brondeel; Christine Dupont-Gillain

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Medicine (Health Sciences)