Table 2 Annual change in the number of positive individuals by test per unit
Target | n of units | 2011 | 2013 | 2016 |
|---|---|---|---|---|
1857 | 2544 | 2375 | ||
Screening | n of units (%) | 1779 (95.8) | 1367 (53.7) | 1742 (73.3) |
 Tested | Mean (SD) Median (interquartile) | 388.9 (387.0) 309.0 (175–502) | 397.8 (311.6) 286 (194–502) | 400.2 (348.2) 320.5 (195–509) |
 Positive | Mean (SD) Median (interquartile) | 2.0 (20.4) 0 (0–1) | 1.7 (14.7) 0 (0–2) | 1.6 (12.2) 0 (0–2) |
WB | n of units (%) | 803 (43.2) | 860 (33.8) | 1699 (71.5) |
 Tested | Mean (SD) Median (interquartile) | 13.1 (73.1) 1 (1–3) | 5.9 (47.2) 1 (0–3) | 5.9 (44.2) 0 (0–2) |
 Positive | Mean (SD) Median (interquartile) | 1.2 (3.9) 1 (0–1) | 1.0 (1.7) 1 (0–1) | 0.5 (1.4) 1 (0–1) |
PCR | n of units (%) | 816 (43.9) | 78 (3.1) | 255 (10.7) |
 Tested | Mean (SD) Median (interquartile) | 2.5 (28.5) 0 (0–0) | 2.4 (2.5) 1 (1–3) | 20.5 (112.0) 0 (0–1) |
 Positive | Mean (SD) Median (interquartile) | 0.2 (3.6) 0 (0–0) | 0.5 (0.9) 0 (0–1) | 0.6 (6.3) 0 (0–0) |