Table 152 -Which Organism in Table 15

Table 15.2 $\begin{array} { | l | c | } \hline \text { Bacterium } & \text { ID } 50 \\\hline \text { E. coli O157:H7 } & 20 \\\hline \begin{array} { l } \text { Legionella } \\\text { pneumophila }\end{array} & 1 \\\hline \text { Shigella } & 10 \\\hline \begin{array} { l } \text { Treponema } \\\text { pallicum }\end{array} & 57 \\\hline\end{array}$
-Which organism in Table 15.2 most easily causes an infection?

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