Volume 28, Number 12—December 2022
Research
Daily Rapid Antigen Exit Testing to Tailor University COVID-19 Isolation Policy
Rebecca Earnest
, Christine Chen, Chrispin Chaguza, Anne M. Hahn, Nathan D. Grubaugh1, Madeline S. Wilson1, and for the Yale COVID-19 Resulting and Isolation Team2
, Christine Chen, Chrispin Chaguza, Anne M. Hahn, Nathan D. Grubaugh1, Madeline S. Wilson1, and for the Yale COVID-19 Resulting and Isolation Team2
Table 1
Characteristics of population completing isolation in study of students in a university-managed isolation program, January 1–February 11, 2022*
| Characteristic | No. (%) persons by days since last negative test |
Total no. (%), N = 323 | |||
|---|---|---|---|---|---|
| ≤4 d, n = 181 | 5–9 d, n = 48 | ≥10 d, n = 93 | Unknown, n = 1 | ||
| Self-reported symptoms before or at diagnosis | |||||
| No | 51 (28) | 17 (35) | 46 (49) | 1 (100) | 115 (36) |
| Yes | 130 (72) | 29 (60) | 46 (49) | 0 (0) | 205 (63) |
| Unknown |
0 (0) |
2 (4) |
1 (1) |
0 (0) |
3 (1) |
| Prior infection >90 d | |||||
| No | 171 (94) | 46 (96) | 84 (90) | 1 (100) | 302 (93) |
| Yes |
10 (6) |
2 (4) |
9 (10) |
0 (0) |
21 (7) |
| No. vaccine doses | |||||
| 1 | 3 (2) | 0 (0) | 6 (6) | 0 (0) | 9 (3) |
| 2 | 38 (21) | 16 (33) | 31 (33) | 1 (100) | 86 (27) |
| 3 | 136 (75) | 30 (62) | 54 (58) | 0 (0) | 220 (68) |
| 4 | 1 (1) | 1 (2) | 0 (0) | 0 (0) | 2 (1) |
| Unknown | 3 (2) | 1 (2) | 2 (2) | 0 (0) | 6 (2) |
*Category totals may not add to 100% because of rounding.
1These authors contributed equally to this article.
2Members of the team are listed at the end of this article.
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