Table 4.
Frequency of positive results of anti-EBV antibodies and positive viral load results in patients with JIA, other types of arthritis, and controls.
| EBV Infection Marker | JIA (n = 44) n (%) |
Other Types of Arthritis (n = 23) n (%) |
Control (n = 44) n (%) |
|
|---|---|---|---|---|
| VCA | IgA | 1 (2.3) | 0 | 0 |
| IgG | 19 (43.1) | 7 (30.4) | 20 (45.4) | |
| EA | IgM | 5 (11.4) | 3 (13.0) | 4 (9.1) |
| IgA | 0 | 0 | 1 (2.3) | |
| IgG | 0 | 1 (4.3) | 0 | |
| EBNA-1 | IgA | 0 | 0 | 0 |
| IgG | 0 | 0 | 1 (2.3) | |
| IgM | 0 | 0 | 0 | |
| Positive viral load results | 11 (25%) | 6 (26%) | 8 (18%) | |
| Range (min-max) |
copy number/µL | 0–3.35 | 0–21.67 | 0–2.84 |
| copy number/µg DNA | 0–23.06 | 0–268.16 | 0–23.26 | |
| copy number/100,000 cells | 0–15.22 | 0–176.98 | 0–15.35 | |
| concentration DNA ng/µL | 0–171.16 | 0–170.88 | 0–192.7 | |
EA—early antigen; EBNA-1—Epstein-Barr nuclear antigen 1; EBV—Epstein-Barr virus; JIA—juvenile idiopathic arthritis; VCA—viral capsid antigen.