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. 2021 Dec 17;9:789402. doi: 10.3389/fpubh.2021.789402

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Copyright © 2021 Simas, Crott, Sedore, Rohrbach, Monaco, Gabriel, Lennon, Blumenstiel and Genco.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Pooled pilot study timeline. Two thousand and thirty-two pairs of samples were collected over a 3-week period. Two thousand and twenty-one of those pairs were collected from the Tufts University community (blue). The other 11 pairs were collected from individuals under investigation and in quarantine due to possible exposure to SARS-CoV-2 (red). During the third week of the study, the low positivity rate in the Tufts community necessitated the inclusion of laboratory-generated positive samples (gray).