Table 1.
Positive, negative, and total samples analyzed for each of the nine years investigated, reported as a number and percentage (in brackets).
| Years | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2015–2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Samples | ||||||||||
| Positive n. (%) | 1916 (74.5) | 2202 (76.7) | 2097 (74.3) | 2248 (74.3) | 2464 (74.1) | 1958 (73) | 2172 (70.4) | 2676 (71.8) | 2880 (72) | 20,613 (73.3) |
| Negative n. (%) | 657 (25.5) | 670 (23.3) | 726 (25.7) | 776 (25.7) | 863 (25.9) | 723 (27) | 906 (29.6) | 1049 (28.2) | 1121 (28) | 7491 (26.7) |
| Total samples n. | 2573 | 2872 | 2823 | 3024 | 3327 | 2681 | 3078 | 3725 | 4001 | 28,104 |