Clickers, a terrifying class of infected in the world of The Last of Us, develop from humans who have been exposed to the Cordyceps brain infection. This transformation is not immediate but a gradual process, signifying the third stage of infection.
The Transformation Process
The journey to becoming a Clicker begins with the initial exposure to the Cordyceps fungus. Over time, the fungus proliferates within the host's body and brain, leading to severe mutations and loss of human characteristics.
The critical factor in their development is the duration of the infection. An individual will typically reach the Clicker stage after approximately one year of being infected. During this period, the fungal growth becomes extensive, particularly on the head, covering and consuming the host's face. This dense fungal growth results in complete blindness, forcing Clickers to rely entirely on echolocation, emitting the distinctive clicking sounds that give them their name.
Stages of Cordyceps Brain Infection Progression
The Cordyceps brain infection progresses through several distinct stages, each marked by escalating fungal growth and physical changes:
- Stage 1: Runners - These are the initial stage of infection, where the host still retains a somewhat human appearance but is highly aggressive and fast. This stage typically occurs immediately after infection.
- Stage 2: Stalkers - As the infection advances, usually within a few weeks to months, the fungal growth becomes more prominent, partially covering the host's face. Stalkers are known for their stealth and tendency to ambush their prey.
- Stage 3: Clickers - After roughly one year of infection, the fungus fully encapsulates the host's head, causing blindness. Their unique clicking sounds are a result of their echolocation abilities, used to navigate and locate prey. They also develop tough, fungal plates on their bodies, making them more resilient.
- Stage 4: Bloaters/Shamblers - These are the most advanced and dangerous stages, occurring after many years of infection. The fungal armor on their bodies becomes incredibly thick and durable, making them formidable adversaries.
The transition to a Clicker highlights the devastating long-term effects of the Cordyceps brain infection, transforming humans into highly dangerous, blind creatures that navigate the world through sound.
