Multi-household social gatherings contribute to the second SARS-CoV-2 wave in Rhineland-Palatinate, Germany, August to November 2020

• Verfasst von: Schepers, Markus [VerfasserIn]
• Verfasst von: Zanger, Philipp [VerfasserIn]
• Verfasst von: Jahn, Klaus [VerfasserIn]
• Verfasst von: König, Jochem [VerfasserIn]
• Verfasst von: Strauch, Konstantin [VerfasserIn]
• Verfasst von: Gianicolo, Emilio [VerfasserIn]
• Titel: Multi-household social gatherings contribute to the second SARS-CoV-2 wave in Rhineland-Palatinate, Germany, August to November 2020
• Verf.angabe: Markus Schepers, Philipp Zanger, Klaus Jahn, Jochem König, Konstantin Strauch, Emilio Gianicolo
• E-Jahr: 2022
• Jahr: 8 April 2022
• Umfang: 7 S.
• Fussnoten: Gesehen am 01.08.2022
• Titel Quelle: Enthalten in: Journal of infection
• Ort Quelle: Amsterdam [u.a.] : Elsevier, 1979
• Jahr Quelle: 2022
• Band/Heft Quelle: 84(2022), 4, Seite 551-557
• ISSN Quelle: 1532-2742
• DOI: doi:10.1016/j.jinf.2022.01.028
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: COVID-19
• Sach-SW: descriptive statistics
• Sach-SW: epidemiology
• Sach-SW: Germany
• Sach-SW: private households
• Sach-SW: Public health
• Sach-SW: SARS-CoV-2
• Sach-SW: social gatherings
• K10plus-PPN: 1812508026

Abstract

Background - Although the private household setting is considered a major driver of viral spread, only little is known about the contextual details of SARS-CoV-2 household transmission, thus hampering political decision-making. - Materials and methods - We analyzed individual case and cluster data from statutory notifications from August to November 2020 in Rhineland-Palatinate - the period preceding the second SARS-CoV-2 wave. We also conducted an into-depth survey on contextual details of household transmission in a representative sample of 149 private household clusters that had occurred during this period. - Results - During the study period, 18,695 PCR-confirmed SARS-CoV-2 cases were notified, 3,642 of which occurred in 911 clusters (private households (67.3%), the workplace (7.8%), elderly homes (1.8%), others (23.2%). Demographically, clustered cases were representative of all notified cases. Two-thirds (77/113, 68%) of sample response clusters involved more than one private household. These caused on average more close contact persons (mean 13.5, ±SD 15.8) and secondary cases (3.9, ±SD 0.4) than clusters involving one household only (5.1 ± 13.8 and 2.9 ± 0.2). About one in six multi-household clusters in the private setting (13/77) followed a social gathering (e.g. birthday party). Breaches of one or more of the three major barrier concepts (mask, ventilation, and distance) were identified in most (10/13) of these social gatherings. SARS-CoV-2 clusters following social gatherings were overrepresented during the second half of the study period. - Conclusion - In times of increasing infectious pressure in a given population, multi-household social gatherings appear to be an important target for reducing SARS-CoV-2 transmission.