Editing Comparison of computer viruses (section)

== Scope ==
In terms of scope, there are two major variants: the list of "in-the-wild" viruses, which list viruses in active circulation, and lists of all known viruses, which also contain viruses believed not to be in active circulation (also called "zoo viruses").  The sizes are vastly different: in-the-wild lists contain a hundred viruses but full lists contain tens of thousands.