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. 2022 Dec 9;3(12):883–900.e13. doi: 10.1016/j.medj.2022.09.003

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© 2022 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Data types, incidence rates, and epidemiological risk factors for SARS-CoV-2 positivity on Colorado Mesa University’s campus

(A) Cohort description. A subset of students at Colorado Mesa University (CMU) tested positive for COVID-19 via reflexive or random surveillance qRT-PCR testing. CMU provided demographic and behavioral metadata for each case. Most students who tested positive were enrolled in the WiFi proximity program (gray). Some positive samples were available for viral genomic sequencing (yellow).

(B) Data collection time points (black) by data type during the Fall and Spring semesters. Data not shown for November 21–January 18 due to winter recess.

(C) Upper: weekly COVID-19 incidence (black) and number of tests conducted (blue) over the 2020–2021 academic year. Lower: percent positivity rate. Data not shown for November 21–January 18 due to winter recess.

(D) The difference between the number of cases observed and the number of cases expected (based on sports team size and scaled by the number of cases expected; y axis) versus the number of cases expected (x axis) per sports team. The dashed line at y = 0 separates teams with more (above) or fewer (below) cases observed than expected. Teams are colored by contact level (legend). M refers to men’s teams and W to women’s teams.

(E) The difference between the number of cases observed and the number of cases expected (based on class size and scaled by the number of cases expected; y axis) versus the number of cases expected (x axis) per class year. The dashed line at y = 0 separates classes with more (above) or fewer (below) cases observed than expected. Classes are colored by semester (legend).