TABLE 3.
Comparison of the AC/HS and VIDAS avidity test results for 50 samples from pregnant women
| VIDAS avidity test results | AC/HS pattern (n = 50)a
|
||
|---|---|---|---|
| Acute (n = 24) | Equivocal (n = 20) | Nonacute (n = 6) | |
| Low | 16 (15) | 2 (2) | 0 |
| Equivocal | 4 (4) | 0 | 0 |
| High | 4 (2) | 18 (9) | 6 (2) |
a
The numbers in parentheses refer to BioPlex 2200 toxoplasma-positive samples among the corresponding groups. The AC/HS test uses methanol or acetone-fixed and formalin-fixed tachyzoite preparations that express antigenic determinants found early following acute infection (AC antigen) or in the later stages of infection (HS antigen), respectively.