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Published on in Vol 16 (2024)

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/54578, first published .
Medical professional in protective gear holds COVID-19 test tube.

Contact Tracing Different Age Groups During the COVID-19 Pandemic: Retrospective Study From South-West Germany

Contact Tracing Different Age Groups During the COVID-19 Pandemic: Retrospective Study From South-West Germany