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letter . 2021 Mar 2:ciab199. doi: 10.1093/cid/ciab199
Renewed absence of SARS-CoV-2 infections in the day care context in Berlin, January 2021
Welmoed van Loon
1,✉, Franziska Hommes
1, Stefanie Theuring
1, Annkathrin von der Haar
1, Jennifer Körner
1, Michael Schmidt
2, Christof von Kalle
3, Marcus A Mall
4, Joachim Seybold
5, Tobias Kurth
6, Frank P Mockenhaupt
1
Welmoed van Loon
1
Institute of Tropical Medicine and International Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Franziska Hommes
1
Institute of Tropical Medicine and International Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Stefanie Theuring
1
Institute of Tropical Medicine and International Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Annkathrin von der Haar
1
Institute of Tropical Medicine and International Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Jennifer Körner
1
Institute of Tropical Medicine and International Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Michael Schmidt
2
German Red Cross Blood Transfusion Service, Frankfurt, Germany
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Christof von Kalle
3
Clinical Study Center, Berlin, Germany, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Marcus A Mall
4
Department of Pediatric Pulmonology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Joachim Seybold
5
Medical Directorate, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Tobias Kurth
6
Institute of Public Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Frank P Mockenhaupt
1
Institute of Tropical Medicine and International Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
Find articles by Frank P Mockenhaupt
1
Institute of Tropical Medicine and International Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
2
German Red Cross Blood Transfusion Service, Frankfurt, Germany
3
Clinical Study Center, Berlin, Germany, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
4
Department of Pediatric Pulmonology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
5
Medical Directorate, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
6
Institute of Public Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
✉
Corresponding author: Welmoed van Loon, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Tel.: +49 (0)30 450 565764, welmoed.van-loon@charite.de
Received 2021 Feb 20.
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PMCID: PMC7989586 PMID: 33675648