There was actually a recent discovery about zombification/mind control but by a type of wasp. The wasp lays eggs within a caterpillar which then allows the grub to eat their way out. However not killing the caterpillar and leaving behind one grub, the rest start to spin cocoons outside the host and the infected caterpillar then attaches itself to the cocoons. The caterpillar then serves as a guardian stopping any predators by thrashing its body around and knocking them away from the cocoons till they hatch.
On a side note - NOTHING creeps me out more than host invading parasites.