Table 152 -Which Organism in Table 15

Multiple Choice

Table 15.2 $\begin{array}{|l|c|}\hline \text { Bacterium } & \text { ID50 } \\\hline \text { E. coli } 0157: \mathrm{H7} & 20 \\\hline \text { Legionella pneumophia } & 1 \\\hline \text { Shigella } & 10 \\\hline \text { Treponema pallidum } & 57 \\\hline\end{array}$
-Which organism in Table 15.2 most easily causes an infection?

A) Shigella
B) Legionella pneumophila
C) Treponema pallidum
D) E. coli O157:H7
E) The answer cannot be determined based on the information provided.