There already is a mild "mutation"
It's called the common cold. It appears that SARS is a mutation of the Coronavirus; the virus responsible for the annoying, but normally non fatal disease which to date has still not been cured by anything short of time and symptom relieving medications.
~~~)-Steven----
"I want you to remember that no bastard ever won a war by dying for his country.
He won it by making the other poor dumb bastard die for his country..."
General George S. Patton