 1. Background, there is disagreement about the level of asymptomatic severe acute respiratory syndrome coronavirus 2, SARS-CoV-2, infection. To address this, a living systematic review and meta-analysis was conducted to answer three questions. a. What proportion of people who become infected with SARS-CoV-2 does not experience symptoms at all during their infection? b. What proportion of people with SARS-CoV-2 infection who are asymptomatic when diagnosed will develop symptoms later? c. What proportion of SARS-CoV-2 transmission is accounted for by people who are either asymptomatic throughout infection or presymptomatic? 2. Methods and findings. The study searched PubMed, M-Base, BioRxiv, and MedRxiv using a database of SARS-CoV-2 literature that is updated daily on three different dates, March 25, 2020, April 20. This article was authored by Diana Buetroga-Varcia, Diana Igligani, Michelle J. Kunat, and others. We are article.tv, links in the description below.