Table 3

Classification of disease severity using radiographic, lung lesion and CT scores
a) Classification of pigs based on disease severity assessed by CT score and radiographic score on day 7 post challenge
CT score on day 7 post challenge radiographic score* on day 7 post challenge
not affected 0–4 slightly affected 5–15 moderately affected 16–26 severely affected > 26 Total
severely affected (≥2.23) 0 5 (17. 2%) 2 (6.9%) 2 (6.9%) 9 (31.0%)
moderately affected (1.71–2.22) 0 0 2 (6.9%) 0 2 (6.9%)
slightly affected (0.24–1.70) 3 (10.3%) 4 (13.8%) 1 (3.5%) 0 8 (27.6%)
not affected (0–0.23) 8 (27.6%) 2 (6. 9%) 0 0 10 (34.5%)
Total 11 (37.9%) 11 (37.9%) 5 (17.3%) 2 (6.9%) 29 (100.00%)
b) Classification of pigs based on disease severity assessed by CT score and radiographic score on day 21 post challenge
CT score on day 21 post challenge radiographic score* on day 21 post challenge
not affected 0–4 slightly affected 5–15 moderately affected 16–26 severely affected > 26 Total
severely affected (≥ 2.23) 0 0 2 (7.4%) 0 2 (7.4%)
moderately affected (1.71–2.22) 1 (3.7%) 2 (7.4%) 0 0 3 (11.1%)
slightly affected (0.24–1.70) 1 (3.7%) 7 (26.0%) 2 (7.4%) 0 10 (37.1%)
not affected (0–0.23) 8 (29.6%) 4 (14.8%) 0 0 12 (44.4%)
Total 10 (37.0%) 13 (48.2%) 4 (14.8%) 0 27 (100.00%)
c) Classification of pigs based on disease severity assessed by CT score and lung lesion score
CT score on day 21 post challenge lung lesion score** on day 21 post challenge
not affected 0 slightly affected 0.1–5.0 moderately affected 5.1–10.0 severely affected > 10 Total
severely affected (≥ 2.23) 0 0 0 4 (13.8%) 4 (13.8%)
moderately affected (1.71–2.22) 0 0 3 (10.4%) 0 3 (10.4%)
slightly affected (0.24–1.70) 0 7b (24.1%) 3 (10.3%) 0 10 (34.4%)
not affected (0–0.23) 10a (34.5%) 1b (3.5%) 1b (3.4%) 0 12 (41.4%)
Total 10 (34.5%) 8 (27.6%) 7 (24.1%) 4 (13.8%) 29 (100.0%)
d) Classification of pigs based on disease severity assessed by radiographic score and lung lesion score
radiographic score* on day 21 post challenge lung lesion score** on day 21 post challenge
not affected 0 slightly affected 0.1–5.0 moderately affected 5.1–10.0 severely affected > 10 Total
severely affected>26 0 0 0 2 (6.9%) 2 (6.9%)
moderately affected16–26 0 1 (3.5%) 1 (3.5%) 2 (6.9%) 4 (13.8%)
slightly affected5–15 4 (13.8%) 5b (17.2%) 4 (13.8%) 0 13 (44.8%)
not affected0–4 6a (20.7%) 2b (6.9%) 2b (6.9%) 0 10 (34.5%)
Total 10 (34.5%) 8 (27.6%) 7 (24.1%) 4 (13.8%) 29 (100.00%)

*[[21]],**[[22]].

aincluding two control pigs, bincluding one control pig.

Brauer et al.

Brauer et al. BMC Veterinary Research 2012 8:47   doi:10.1186/1746-6148-8-47

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