The following section contains information from a previous version of StarCraft II which is no longer valid.
The Swarm Infestation was a temporary modification made to zerg structures by a queen. It enabled the structure to attack nearby enemy units. The attack resembled glowing flies. The area of effect of the ability was about the size of a zerg hive (5x5), which made this ability more useful in clustered buildings.
|Canceled Zerg Units and Structures of StarCraft II|