Well they did say at one point that it definitely wasn't a virus, because you can't infect a dead body. In all actuality, I don't think a virus that takes control of a brain and can exploit its functions to the extent that it can avoid targeting diseased creatures by using the host's senses is possible, because such a thing would require advanced social networking. Something as evolved as ants could probably do it, but a virus isn't even an actual cell, it's just genetic code that can only multiply itself.
Also, one of my favourite girl groups had a
comeback and I forgot to even watch it for a week.