Figure 1.

Proportion of Mycoplasma hyopneumoniae infected sentinels at 94 and 214 dpi (transmission assessments 1 and 2). Mycoplasma hyopneumoniae DNA was detected by nested-PCR from bronchial swabs. Gross lung lesions associated with M. hyopneumoniae infection were confirmed by histopathology. The proportion of unvaccinated and vaccinated sentinels in which M. hyopneumoniae DNA was detected was not statistically different (P > 0.05) at either 94 or 214 dpi. The proportion of unvaccinated and vaccinated sentinels in which lung lesions were detected at either 94 or 214 dpi was similar (P > 0.05).