2022. Wastewater monitoring of SARS-CoV-2 shows high correlation with COVID-19 case numbers and allowed early detection of the first confirmed B.1.1.529 infection in Switzerland: results of an observational surveillance study. Swiss Medical Weekly. 152, 2526 (Jun. 2022), w30202. DOI:https://doi.org/10.4414/SMW.2022.w30202.