The Final of Us Explains How the Contaminated Work

[Warning: This story contains spoilers for The Last of Us Episode 2, “Infected.”] Sunday’s The Final of Us will get to the foundation of the fungal apocalypse and the Cordyceps mind an infection, or CBI, the zombifying fungus that infects human brains. In Episode 1, “When You are Misplaced within the Darkness,” a radio reported on “continued disturbances” in Jakarta, Indonesia, on Outbreak Day 2003. Episode 2 flashes again even additional within the timeline to Jakarta on September twenty fourth, 2003, the place mycology professor Ibu Ratna (Christine Hakim) investigates ophiocordyceps samples collected from the corpse of a flour and grain manufacturing facility employee on the west facet of the town.
“Cordyceps can’t survive in a human,” Ratna says of the impossibility, plucking a squirming tendril from the employee’s mouth throughout an post-mortem. Army officers clarify the human-bitten employee turned “instantly violent” and attacked 4 co-workers, spreading her an infection by biting three. The bitten employees have been noticed and needed to be executed, however no biter was recognized — and 14 employees stay lacking. “There is no such thing as a medication,” Ratna notes, echoing the warning of epidemiologist Dr. Neuman (John Hannah). “There is no such thing as a vaccine.” To cease the unfold, Ratna advises they bomb the town and everybody in it.
The Final of Us: Fungus An infection, Defined
As Dr. Neuman defined in 1968, cordyceps is a mind-altering fungus that infects bugs. Such fungi journey by the circulatory system to flood the mind with hallucinogens, bending the host’s thoughts to its will. The parasitic fungus controls and directs the host’s habits “like a puppeteer with a marionette,” solely to feed on its host from inside, changing its flesh with its personal. However the sufferer does not die: the parasite retains its host alive by stopping decomposition.
In post-pandemic 2023, smugglers Joel (Pedro Pascal) and Tess (Anna Torv) escort the bitten-but-immune Ellie (Bella Ramsey) to a Fireflies rendezvous outdoors the partitions of the Boston QZ. Their mission is to succeed in a Firefly base camp someplace out west, the place medical doctors are engaged on a CBI treatment. As a result of Ellie was bitten however didn’t succumb to the an infection, she could possibly be the important thing to discovering a vaccine.

Levels of An infection
The sick present indicators of Cordyceps an infection: coughing, slurred speech, muscle spasms, and temper change. The place the wound is positioned on the physique determines the time to full an infection: neck, face, head (5-Quarter-hour); torso, arm, shoulder, hand (2-6 hours); leg, foot (12-24 hours).
Based on FEDRA (the Federal Catastrophe Response Company), there are 4 phases of Contaminated:
The Totally different Varieties of Contaminated in The Final of Us
- INFECTED STAGE 1 – “Runner”: Cordyceps has taken over the sufferer’s motor features. Quick and agile. Stage 1 Contaminated normally journey in packs. DO NOT LET THEM SWARM YOU.
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INFECTED STAGE 2 – “Stalker”: Makes use of surroundings to cover and ambush victims. Will regularly flank and assault from behind. Strategy with warning and verify your environment.
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INFECTED STAGE 3 – “Clicker”: Fully blind, acute listening to, use echolocation to hunt out prey. Hold your distance! Stage 3 Contaminated are recognized for his or her ferocious assaults and are extraordinarily deadly.
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INFECTED STAGE 4 – “Bloater”: Uncommon however harmful evolution of Stage 3 Contaminated. Extremely robust and able to throwing acidic projectiles. DO NOT ENGAGE UNLESS ABSOLUTELY NECESSARY.

How the Contaminated Work on The Final of Us
“Everybody stated the open metropolis was loopy. Like, swarms of Contaminated operating round all over the place. So there aren’t Tremendous-Contaminated that explode fungus spores on you? Or ones with cut up open heads that see at the hours of darkness like bats?”
In contrast to the online game, the Cordyceps an infection doesn’t unfold by airborne spores. As a substitute, there are two major modes of transmission: bites and tendrils that unfold the Cordyceps fungus orally in what appears to be like like an open-mouthed kiss of dying.
Some Contaminated final solely a month or two, however some have been “strolling round 20 years,” based on Joel. When Ellie notices the Contaminated in Episode 2 transfer collectively as if in a hive thoughts, Tess says the parasite hosts are related. That poses fixed risks to survivors within the open metropolis outdoors of the Quarantine Zone: Boston’s ruins are overgown with dwelling fungi that alert the Contaminated swarm of human hosts.
“The fungus additionally grows underground. Lengthy fibers like wires, a few of them stretching over a mile. You step on a patch of cordyceps in a single place, and you’ll wake a dozen Contaminated from elsewhere,” Tess explains. “Now they know the place you’re, now they arrive. You are not immune from being ripped aside.”
Bone-dry fungus signifies useless Contaminated not stirred by human hosts. Episode 2 pits the trio towards Runners (Stage 1 Contaminated) and the even deadlier Clickers (Stage 3 Contaminated) — named for his or her clicking noises — which might’t see, however can hear. Each might be killed with hearth or a number of gunshots to the pinnacle.
Why Are There No Spores in The Final of Us?
“Clearly, there are some large issues that we all know we’re retaining [from the video game], in fact, however then there are challenges from the sport to the present that needed to be thought of,” sequence co-creator and showrunner Craig Mazin, who wrote and directed Episode 1, solely instructed ComicBook. “As an illustration, little issues just like the spores. Within the sport, you encounter spores, and it’s essential put a gasoline masks on. On the planet that we’re creating, if we put spores within the air, it could be fairly clear that they’d unfold round all over the place, and everyone must put on a masks on a regular basis. And doubtless everyone could be utterly contaminated by that time.”
Mazin continued: “So, we challenged ourselves to give you an attention-grabbing new manner for the fungus to unfold, however principally, I feel we simply related with the soul and spirit of the sport.”
New episodes of The Final of Us premiere Sundays on HBO and HBO Max. Observe for extra The Final of Us on ComicBook.