Infects all enemy units and buildings in area of effect, dealing 300 damage over 40 seconds. Cannot reduce units below 1 HP. Reveals cloaked and burrowed units caught in the area of effect for its duration.
Many zerg ground units may burrow, become invisible and may be revealed primarily by detectors, and may not move or attack. Exceptions are the roach, which may move while burrowed, the infestor, which may move and cast Infested Terran, and the baneling, which can detonate while burrowed.
Some units can unburrow via autocast, causing them to emerge and attack when an enemy moves into range.