id author title date pages extension mime words sentences flesch summary cache txt cord-329392-fufattj8 den Hartog, Gerco SARS-CoV-2–Specific Antibody Detection for Seroepidemiology: A Multiplex Analysis Approach Accounting for Accurate Seroprevalence 2020-08-08 .txt text/plain 4326 218 41 Serum samples were obtained from the following cohorts: (1) a random selection of individuals (n = 224) from a national (Dutch) cohort representing all age groups and obtained 3 years prior to SARS-CoV-2 emergence (Pienter3 study, Netherlands trial register number NL5467); (2) individuals (Supplementary Table 2 ) with proven non-SARS-CoV-2 ILI caused by human coronaviruses (n = 110, HCoV ILI) or other viruses (n = 74, non-HCoV ILI) obtained from the National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands (trial register number NL4666) [18] , and from Erasmus Medical Center, Rotterdam, collected prior to the SARS-CoV-2 outbreak and at least 2 weeks after polymerase chain reaction (PCR) detection of the virus; and (3) The steps in assay validation were similar to recently developed bead-based multiplex immunoassays for CMV, EBV, and RSV, with minor modifications as described below [16, 17] . ./cache/cord-329392-fufattj8.txt ./txt/cord-329392-fufattj8.txt