Ophiocordyceps unilateralis, also known as cordyceps can infect insects such as ants or spiders. Like other parasites, cordyceps drains its host completely of nutrients before filling its body with spores that will let the fungus reproduce.
It cannot infect humans... Our body temperatures are high enough that most organisms, won't be able to survive in our bodies.
However, there are fungi that makes some of us sort of zombies.... These can alter our state of mind. An example of one such fungus is psilocybin - "The Magic Mushrooms."
PS: Last year one idiot in the US, injected magic mushroom tea into his veins. The fungus started growing in his blood. This person spent 22 days in the hospital, with eight of those days in the ICU, where he received treatment for multisystem organ failure. After being released, he had to undergo treatment with a long-term regimen of antibiotic and antifungal drugs.
