From: Recent large-scale philophthalmosis outbreak in Portugal: inefficacy of common antihelminthic agents
Year | Host species | |||||
---|---|---|---|---|---|---|
Larus michahellis | Larus fuscus | |||||
Total n examined | Infected birds, n (%) | Intensity of infectiona | Total n examined | Infected birds, n (%) | Intensity of infectiona | |
2015 | 205 | 1 (0.5%) | 2 | 126 | 8 (6.3%) | 3.5 (1– >50) |
2016 | 341 | 7 (2.1%) | 2 (1–16) | 199 | 18 (9.0%) | 11.5 (1–76) |
2017 | 396 | 6 (1.5%) | 6 (1–50) | 185 | 19 (10.3%) | 6 (1- >50) |
2018 | 339 | 1 (0.3%) | 5 | 160 | 7 (4.4%) | 4 (3–18) |
2019 | 802 | 10 (1.2%) | 3 (1–51) | 322 | 11 (3.4%) | 3 (2–15) |
2020 | 823 | 15 (1.8%) | 4 (1– >50) | 397 | 16 (4.0%) | 4 (1– >50) |