TABLE 2.
Test Positivity and TAR Among Analysis-Eligible Population and in Sensitivity Analyses: Limited to Tests After 1-Day Postexposure and Excluding Outside-of-School and Athletic Exposures
| 11/29/2021–1/28/2022 (Delta and Omicron) (%) | 1/3/2022–1/28/2022 (Omicron) (%) | |
|---|---|---|
| Primary and secondary analyses | ||
| Test-positive cases among analysis-eligible populationa | ||
| Number of analysis eligible | 1675 | 940 |
| Total positive tests (secondary and tertiary) | 201 (12) | 132 (14) |
| Positive tests among tertiary contacts in TTS (TAR) | 20 of 192 (10) | 7 of 109 (6) |
| Sensitivity analyses | ||
| Test positivity limited to tests after 1 d postexposure | ||
| Number of analysis eligible | 1619 | 903 |
| Total positive tests (secondary and tertiary) | 145 (9) | 95 (11) |
| Positive tests among tertiary contacts in TTS (TAR) | 16 of 124 (13) | 7 of 76 (9) |
| Test positivity excluding outside-of-school exposures and athletic exposures | ||
| Number of analysis eligible | 1550 | 841 |
| Total positive tests (secondary and tertiary) | 188 (12) | 121 (14) |
| Positive tests among tertiary contacts in TTS (TAR) | 19 of 185 (11) | 7 of 103 (7) |
a
Analysis-eligible population based on unique exposure events rather than unique participants.