Figure 1.

Hamsters monitoring. (A) Growth curves of control hamsters (black, n = 7) and hamsters infected with L. interrogans (red, n = 8), L. mayottensis (green, n = 7), or L. borgpetersenii (blue, n = 7). Results are expressed as means ± SEM. Asterisks (*) indicate significant differences in body weight percentage between hamsters infected by L. interrogans and control hamsters. Plus signs (+) indicate significant differences in body weight percentage between hamsters infected with L. interrogans and two other groups of hamsters: control and L. borgpetersenii-infected hamsters. The hamster surviving the infection with L. interrogans was considered as an outlier and was not included in the growth curve data. (B) Survival rates of hamsters infected with L. interrogans (red, n = 9), L. mayottensis (green, n = 7), or L. borgpetersenii (blue, n = 7).