Table 1.
Absolute and relative frequencies of positive farms for conventional pathogens among those tested in 2019 (n = 44), 2020 (n = 52), and 2021 (n = 57). The total frequency refers to 124 farms, since farms sampled in multiple years were counted only once.
| Year | PRRSV-1 | PCV-2 | PCV-3 | Cultured Bacteria * | L. interrogans | Chlamydia spp. |
|---|---|---|---|---|---|---|
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |
| 2019 | 7 (15.9) | 13 (29.5) | 8 (18.2) | 11 (25.0) | 0 (0.0) | 3 (6.8) |
| 2020 | 14 (26.9) | 16 (30.8) | 5 (9.6) | 11 (21.2) | 4 (7.7) | 1 (1.9) |
| 2021 | 15 (26.3) | 12 (21.1) | 25 (43.9) | 11 (19.3) | 2 (3.5) | 4 (7.0) |
| Total | 31 (25.0) | 38 (30.6) | 38 (30.6) | 31 (25.0) | 6 (4.8) | 8 (6.5) |
* Cultured bacteria include positivity for E. coli, S. suis, S. pyogenes and/or S. aureus.