Table 3 VZV serological test results and history of varicella among 1804 HCWs
History of Varicella | VZV antibody results | ||||
|---|---|---|---|---|---|
Total (no.) | Positive no.(%) | Negative no.(%) | PPV | NPV | |
Positive | 214 | 173 (80.8) | 41 (19.2) | 80.8 | 10.6 |
Negativea | 1590 | 1422 (89.4) | 168 (10.6) | Â | Â |