Fig 1.

Bacterial replication in lungs (A), spleen (B) and liver (C) of BALB/c mice infected with one of the eight Mah isolates, as measured at 1, 5, 12 and 20 weeks post-infection. Data represent mean CFU (log₁₀)/organ ± SEM of five animals tested per group. Isolate IDs represent the host (Hu: human; Po: swine) followed by the respective multispacer sequence type (MST). Statistical significance is depicted for each strain as compared to both Po91 and Hu91 (*: p<0.05).