key: cord-0770247-4d4ug43k authors: Su, Shih-Yung; Lee, Wen-Chung title: Nowcasting the Prevalence of Asymptomatic, Preclinical, and Clinical COVID-19 Infections date: 2021-03-31 journal: J Formos Med Assoc DOI: 10.1016/j.jfma.2021.03.026 sha: 37a5e5c6268bfa794f2f193033c1495e19b24677 doc_id: 770247 cord_uid: 4d4ug43k nan T ai w an (M O S T 108 -301 7-F -002 -001, M O S T 108 -2314-B -002-127-M Y 3 ), and the I nnov ati on and P ol i c y C enter for P opul ati on H eal th and S ustai nabl e E nv i ronm ent (P opul ati on H eal th R esearc h C enter, P H R C ) from F eatured A reas R esearc h C enter P rog ram w i thi n the fram ew ork of the H i g her E duc ati on S prout P rojec t by the M i ni stry of E duc ati on i n T ai w an (N T U -109 L 9003 08). Manuscript title: AUTHORSHIP All persons who meet authorship criteria are listed as authors, and all authors certify that they have participated suf ciently in the work to take public responsibility for the content, including participation in the concept, design, analysis, writing, or revision of the manuscript. Furthermore, each author certi es that this material or similar material has not been and will not be submitted to or published in any other publication. Please indicate the speci c contributions made by each author (list the authors' initials followed by their surnames, e.g., Y.L. Chang). The name of each author must appear at least once in each of the three categories below. Conception and design of study: , , , ; acquisition of data: , , , ; analysis and/or interpretation of data: , , , . Drafting the manuscript: , , , ; revising the manuscript critically for important intellectual content: , , , . Approval of the version of the manuscript to be published (the names of all authors must be listed): All persons who have made substantial contributions to the work reported in the manuscript (e.g., technical help, writing and editing assistance, general support), but who do not meet the criteria for authorship, are named in the Acknowledgments and have given us their written permission to be named. If we have not included an Acknowledgments, then that indicates that we have not received substantial contributions from non-authors. A con ict of interest occurs when an individual's objectivity is potentially compromised by a desire for nancial gain, prominence, professional advancement or a successful outcome. JFMA Editors strive to ensure that what is published in the Journal is as balanced, objective and evidence-based as possible. Since it can be dif cult to distinguish between an actual con ict of interest and a perceived con ict of interest, the Journal requires authors to disclose all and any potential con icts of interest. The authors whose names are listed immediately below certify that they have NO af liations with or involvement in any organization or entity with any nancial interest (such as honoraria; educational grants; participation in speakers' bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-nancial interest (such as personal or professional relationships, af liations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript. Author names: The authors whose names are listed immediately below report the following details of af liation or involvement in an organization or entity with a nancial or non-nancial interest in the subject matter or materials discussed in this manuscript. Please specify the nature of the con ict on a separate sheet of paper if the space below is inadequate. Author names Details of the con ict(s) of interest: Keywords: COVID-19; preclinical infection; asymptomatic infection; nowcasting; prevalence. Main text: World Health Organization. COVID-19 Weekly Epidemiological Update ate_29.pdf?sfvrsn=91306c8c_5&download=true. Accessed at The Incubation Period of COVID-19) From Publicly Reported Confirmed Cases: Estimation and Application International Monetary Fund Rapidly increasing cumulative incidence of coronavirus disease (COVID-19) in the European Union/European Economic Area and the United Kingdom Our World in Data. Cumulative COVID-19 vaccination doses administered per 100 people