>>13252429Yes, but incredibly small chances. The human brain is complex, but some parasites have links to altered behavior in humans like with toxoplasmosis. It's possible a pathogen that evolves resistance to antibiotics or fungicides could have much more significant and clear overrides of human behavior that can be classified as zombie-like. The Last of Us is based on a real life fungus called cordyceps and they devastate arthropods with zombies.