|  | PCR Result |  | |
 |  | Positive | Negative | Total |
IgM | Positive | 4 | 4 | 8 |
Negative | 9 | 59 | 68 | |
 | Total | 13 | 63 | 76 |
 |  | PCR Result |  | |
 |  | Positive | Negative | Total |
IgG | Positive | 9 | 2 | 11 |
Negative | 4 | 61 | 65 | |
 | Total | 13 | 63 | 76 |
 |  | PCR Result |  | |
 |  | Positive | Negative | Total |
Ortho | Positive | 11 | 2 | 13 |
Negative | 2 | 61 | 63 | |
 | Total | 13 | 63 | 76 |