This is a very cool idea, both in theme and mechanically! I think it needs quite a bit of polishing up though. Right now, I think it's too difficult to position your character where they need to be to deal with the viruses--it feels really awkward to move around. I think you should be able to control the angle that the character launches at (so instead of always going straight across, you could choose a launch angle within some arc).
I think this is one of the best concepts of any of the games I've played so far, but the execution is not quite there yet. Just needs a little more thought about how to make your mechanic more fun to use.