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Summary of the demographic characteristics of the study groups.
| COVID+ | COVID- | |
|---|---|---|
| Number | 21 | 33 |
| Age in Yrs, Median (Range) | 34.5 (27–61) | 35 (24–77) |
| Gender (F/M) | 11/10 | 17/16 |
| Past COVID PCR+ | 21 | 0 |
| Spike IgG + | 18 | 0 |
| Median Spike IgG Titer, Median (range) | 1600 (400–6400) | 0 |
| Flu Vaccinated, n (%) | 21 (95.2) | 14 (42.4) |
| Flu Vaccination History | ||
| 3 or more years yrs, n (%) | 19 (90.5) | 9 (27.2) |
| Never, n (%) | 1 (4.7) | 5 (15.2) |
| Not Reported, n (%) | 0 | 14 (42.4) |
