HBO’s ‘The Last of Us’ Fan Theory Might Reveal the Origin of the Cordyceps Infection — a Common Household Ingredient

The Last of Us premiere on HBO detailed the start of the Cordyceps brain infection outbreak. On Sept. 26, 2013, the world descended into chaos as the infection reached critical mass. Twenty years later, the mutated fungus is still prevalent in what remains of the post-apocalyptic wasteland. But how did this all begin? fans of The Last of Us picked up on some clues at the premiere that might have pointed to the origin of the Cordyceps outbreak.

Someone infected with the Cordyceps fungus on ‘The Last of Us’ | Liane Hentscher/HBO

Everything to know about the Cordyceps infection in ‘The Last of Us’

First, it’s important to understand exactly what the Cordyceps infection is. As seen in both The Last of Us video games and TV show, the infection is caused by a mutated version of the Cordyceps fungus. The mutation allows the fungus to survive at higher temperatures, thus making humans a viable host. As the show reveals, global warming is what caused the mutation.

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