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 Med Wkly [Internet]. 2022 Jun. 27 [cited 2025 Nov. 4];152(2526):w30202. Available from: https://smw.ch/index.php/smw/article/view/3226