"Staph" is simply the orientation of the bacterial cells. To say that they're the fastest adapting and "nastiest" is simply untrue, because we don't know this at large yet. There have been findings of flexing bacterium that can switch from strept to staph, and vice versa. We're finding transcription factors and proteins that manipulate the orientation of the bacterial cells.


We're probably only aware of about 10% of harmful (to humans) bacteria presently. Bacteria will once again rule the world some day.