Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Characteristics of the Veterans Affairs Science and Health Initiative to Combat Infectious and Emerging Life-threatening Diseases (VA SHIELD) Samples (N = 34 157 as of 15 October 2022)
| Factor | No. | (%) |
|---|---|---|
| COVID-19 test result | ||
| Positive | 28 639 | (83.8) |
| Negative | 3640 | (10.7) |
| Not tested, null, or inconclusive | 1878 | (5.5) |
| Sample type | ||
| Nasopharyngeal swab | 19 788 | (57.9) |
| Plasma | 9524 | (27.9) |
| Serum | 4284 | (12.5) |
| Other (whole blood, buffy, aspirate) | 224 | (0.7) |
Abbreviation: COVID-19, coronavirus disease 2019.
