| Test | PCR | ||||||
| +ve | −ve | Total | |||||
| ELISA |
| NO. | % | NO. | % | NO. | % |
| +ve | 3 | 75 | 0 | 0 | 3 | 2 | |
| −ve | 1 | 25 | 146 | 100 | 147 | 98 | |
| Total | 4 | 100 | 146 | 100 | 150 | 100 | |