Re: OOC
Indeed. As wikipedia says...
Ophiocordyceps unilateralis suffers from an unidentified fungal hyperparasite, reported in the lay press as the "antizombie-fungus fungus", that results in only 6–7% of sporangia being viable, limiting the damage O. unilateralis inflicts on ant colonies. The hyperparasite moves in to attack O. unilateralis as the fungal stalk emerges from the ant's body, which can stop the stalk from releasing its spores.
The graveyards of dead ants are numerous and spread throughout the surrounding area of the colony. Though O. unilateralis is very virulent, only about 6.5% of all fruiting bodies are viable spore producers. This is caused by the weakening of the fungus by the hyperparasite, which may limit the viability of infectious spores. Ants also groom each other to combat microscopic organisms that could potentially harm the colony. Additional fungi grant beneficial assistance to the colony, as well.