Distribution patterns of 52 lungs with macroscopic lesions considered typical for enzootic pneumonia (“EP-like”, early and late types) and PCR results.

a Late-type lesions were significantly associated with larger affected lung areas (multilobular coalescing, ≥ 50% of infected lobe), p-value = 0.0005. b Numbers in brackets correspond to the specific subgroup of lungs which had exudate oozing from the airways. c On bronchial swabs. Distribution patterns of 52 lungs with macroscopic lesions considered typical for enzootic pneumonia (“EP-like”, early and late types) and PCR results.