[motexva]

The bacteria isn't mutated by the antibiotics. The antibiotics kill off most of the bacteria except the bacteria that has mutated characteristics which make it antibiotic resistant. Those bacteria, unaffected by the antibiotics, multiply and you have a antibiotic-resistant strain. It's called evolution.

[js1138]

Read my post again. It isn't evolution unless the mutated organism infects another host. And what have we been taught about anthrax???? That it isn't contagious.