Published on in Vol 7, No 4 (2021): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/25695, first published
.
![Surveillance of the Second Wave of COVID-19 in Europe: Longitudinal Trend Analyses Surveillance of the Second Wave of COVID-19 in Europe: Longitudinal Trend Analyses](https://asset.jmir.pub/assets/49c244b03bd302bdd7ac27ab555137c2.png 480w,https://asset.jmir.pub/assets/49c244b03bd302bdd7ac27ab555137c2.png 960w,https://asset.jmir.pub/assets/49c244b03bd302bdd7ac27ab555137c2.png 1920w,https://asset.jmir.pub/assets/49c244b03bd302bdd7ac27ab555137c2.png 2500w)
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