Brazilian carpenter ants become zombies when infected with a parasitic fungus that causes the ant to cling to an exposed surface. The ants dies and the fungus grows through their head to fall on other ants on the ground, to repeat the cycle.
The hidden danger of fungi and bacteria will be present after flooded Australian houses and buildings are renovated. The key to prevention will be the early treatment of cavities and surfaces before fungi and bacteria really get a hold.