TABLE. Unadjusted and adjusted mixed effects logistic regression results for postarrival pooled SARS-CoV-2 test results during 12-week windows before and after June 12, 2022 — Traveler-based Genomic Surveillance Program, four U.S. airports,* March 20–September 3, 2022.
| Variable (referent group) | Unadjusted |
Adjusted |
||
|---|---|---|---|---|
| OR (95% CI) | p-value | OR (95% CI) | p-value | |
|
Time window (Jun 12–Sep 3)
| ||||
| Mar 20–Jun 11 |
0.56 (0.47–0.67) |
<0.001 |
0.48 (0.39–0.58) |
<0.001 |
|
Normalized incidence† (0–20)
| ||||
| 20–40 |
1.4 (1.1–1.8) |
0.004 |
1.3 (1.0–1.6) |
0.052 |
| 40–60 |
2.0 (1.5–2.6) |
<0.001 |
1.8 (1.3–2.3) |
<0.001 |
| 60–80 |
2.2 (1.6–3.1) |
<0.001 |
2.1 (1.5–3.0) |
<0.001 |
| 80–100 |
2.3 (1.8–3.0) |
<0.001 |
2.2 (1.7–2.8) |
<0.001 |
|
Pool size (5–9 participants)
| ||||
| 10–14 |
1.4 (1.1–1.6) |
0.002 |
1.5 (1.2–1.9) |
<0.001 |
| ≥15 | 1.4 (1.1–1.8) | 0.004 | 2.6 (1.9–3.4) | <0.001 |
Abbreviation: OR = odds ratio.
* John F. Kennedy International Airport, New York, New York; Newark Liberty International Airport, Newark, New Jersey; Hartsfield-Jackson Atlanta International Airport, Atlanta, Georgia; and San Francisco International Airport, San Francisco, California.
† Incidence was normalized by dividing the 7-day average COVID-19 incidence (cases per 100,000 population) for the flight origin country on the date of collection by the maximum 7-day average daily incidence for that country during the analysis period and multiplying by 100.