TABLE 2.

Macroscopic and microscopic lung lesions scores (mean ± standard deviation) in pigs from different groups at 126 days post‐challenge (175 days of age)

Pathology	Groups
	VacA113/Ch	VacA123/Ch	VacA133/Ch	VacB333/Ch	UnVac/Ch	UnVac/UnCh
Macroscopic lung lesions	2.00 ± 1.48b	2.10 ± 1.30b	2.20 ± 1.47b	3.65 ± 2.56b	16.85 ± 6.16a	0.00 ± 0.00b
Microscopic lung lesions
Mycoplasmal pneumonia	0.12 ± 0.13b	0.10 ± 0.18b	0.12 ± 0.16b	0.18 ± 0.21b	0.52 ± 0.26a	0.00 ± 0.00b
Interstitial pneumonia	0.12 ± 0.13b	0.16 ± 0.17b	0.12 ± 0.16b	0.20 ± 0.22b	0.66 ± 0.28a	0.00 ± 0.00b

Different superscript letters^a,b mean statistically significant differences (p < .05).