You are definitely on the right track: biologists call that (viral mutualistic) symbiosis. Check out [1,2, inter alia]. [1] http://www.nature.com/nrmicro/journ

You are definitely on the right track: biologists call that (viral mutualistic) symbiosis. Check out [1,2, inter alia]. [1] http://www.nature.com/nrmicro/journal/v9/n2/full/nrmicro2491.html http://www.nature.com/nrmicro/journal/v9/n2/full/nrmicro2491... [2] http://jmm.sgmjournals.org/content/58/4/531.full http://jmm.sgmjournals.org/content/58/4/531.full