Quote:
Originally Posted by 46zilzal
Once a virus has adequate host numbers infected, it usually begins to mutate and often becomes MORE virulent.
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I know nothing about the subject, but I could swear I read it's the other way around on some experts web page years ago. If a virus strain is virulent it tends to kill its hosts so quickly, the probability of it spreading starts diminishing. So it's the weaker strains that tend to survive and spread until high risk strains finally burn themselves out.
