Table 1. Clinical allergy scores a of study groups during natural exposure to Culicoides (Cul) midges in the environment (mid-May to mid-October)b.
| Horses | Sex | Year of birth | Age c (Years) | Allergy score d during Cul exposure | Median (range) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| MAY | JUN | JUL | AUG | SEP | OCT | ||||||
| Allergic | 1 | Mare | 2005 | 13 | 0.3 | 3.5 | 3.5 | 3.7 | 3.0 | 1.0 | 3.5 (0.3–3.7) |
| 2 | Mare | 2004 | 14 | 2.0 | 6.0 | 7.0 | 7.0 | 6.0 | 3.0 | 6.5 (2–7) | |
| 3 | Mare | 2004 | 14 | 2.3 | 5.0 | 6.5 | 6.7 | 5.0 | 2.0 | 5.8 (2–6.7) | |
| 4 | Mare | 2003 | 15 | 2.0 | 7.0 | 8.0 | 6.7 | 6.0 | 1.0 | 6.8 (1–8) | |
| 5 | Mare | 2005 | 13 | 1.7 | 5.5 | 7.5 | 5.0 | 5.0 | 2.0 | 5.3 (1.7–7.5) | |
| 6 | Mare | 2009 | 9 | 1.3 | 3.5 | 5.5 | 6.0 | 5.0 | 2.0 | 5.3 (1.3–6) | |
| 7 | Mare | 2011 | 7 | 0.0 | 3.0 | 3.0 | 3.0 | 0.0 | 0.0 | 3.0 (0–3) | |
| 8 | Gelding | 2011 | 7 | 1.0 | 3.5 | 5.0 | 6.3 | 5.0 | 2.0 | 5.0 (1–6.3) | |
| Non-allergic | 9 | Mare | 2007 | 11 | 0 | 3 | 0.5 | 0 | 0 | 0 | 0.3 (0–3) |
| 10 | Mare | 2006 | 12 | 0.0 | 1.5 | 1.0 | 0.0 | 0.0 | 0.0 | 0.5 (0–1.5) | |
| 11 | Mare | 2013 | 5 | 0.3 | 2.0 | 1.0 | 0.3 | 0.0 | 0.0 | 0.7 (0–2) | |
| 12 | Mare | 2011 | 7 | 0.3 | 0.5 | 0.0 | 1.3 | 2.0 | 0.0 | 0.9 (0–2) | |
| 13 | Mare | 2011 | 7 | 0.0 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 (0–0.5) | |
| 14 | Mare | 2012 | 6 | 0.3 | 0.5 | 1.0 | 0.7 | 0.0 | 0.0 | 0.6 (0–1) | |
| 15 | Mare | 2013 | 5 | 0.0 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 (0–0.5) | |
| 16 | Mare | 2013 | 5 | 1.0 | 3.0 | 2.0 | 2.0 | 0.0 | 0.0 | 2.0 (0–3) | |
a Clinical allergy scores ranged from 0–10 as described by Miller et al. 2019 [51].
b From January to mid-May and mid-October to December Cul midges were not present in the environment where horses were kept.
c Age in years at time of study, in 2018.
d Average allergy score at time of study, in 2018.