The host’s cognitive functions are severely damaged as the virus begins to infest the billions of neurons in the brain. Severe encephalitis (inflammation of the brain) causes confusion and abnormal behavior. Cells that are not mutated are often killed in the process.
Hallucinations and mild dementia are followed by the inability to speak or swallow. The operation of individual neurons is disrupted, impairing muscle coordination and ultimately leading to partial paralysis. The virus also alters the brain’s thalamus, shutting down all pain receptors, and damages the temporal lobe. Once these renovations are complete, the victim will be capable only of basic motor functions and primitive instinctual responses.
Full-body paralysis is necessary in order to restrain the body during the final stages of transformation. A body that does not lose complete mobility could overexert itself, possibly causing permanent death (i.e., no post-life).
In the paralysis stage, the victim first experiences overall numbness as the virus lowers his or her heart rate. Then lower-body paralysis sets in, followed by upper-body paralysis. The victim’s flesh is now 50 percent infectious, and it generates reduced levels of the once-irresistible fresh-flesh pheromone (see “Nose,” page 24). So not only is the host’s flesh becoming useless to you and your fellow hungry zombies, but it will also repel you from attacking. This is a helpful feature, because if the victim is attacked and killed before reaching the final stages of zombification, he or she will never make it to reanimation.
While it appears that the body has shut down, the virus is actually modifying the nanotubes in the host’s cellular walls. Once these structures are completely infected and transformed, they transport endogenous chemicals from cell to cell, allowing low-level intercellular communication that bypasses the complex systems of the human body. While this cellular communication is slower, it is necessary once the victim’s nervous system shuts down.
More zed puberty is also taking place. Skeletal muscles are slightly modified to serve basic locomotion. These muscles no longer need oxygen-rich blood; instead, they function with the blood already circulating in the muscles at the time of infection. This infected blood eventually will need to be replenished by uninfected flesh.
A necessary step of zombification is to disconnect all energy-draining body functions. Once cell mutation is complete, the virus pulls the plug—like you, the victim is now a flatliner! Once the heart stops, brain activity also comes to a screeching halt, erasing his or her memory.
What’s up, zombification survivor? The host’s anatomy now experiences reverse rigor mortis, unclamping the body following its final transformation. This reanimation can take anywhere from a few minutes to several hours, depending on virus strain. Body temperature levels off at approximately 70° F, and low-level viral brain activity can also be detected.
The new zombie will start to experience faint body movements that are stimulated by reflexes. It will eventually arise to discover a combination of physical and psychological changes, along with new abilities with which it is not yet familiar. Subconsciously, it feels hungry, not in the stomach but in the brain. This is the virus communicating that it needs human flesh … now! The victim is now 100 percent infected, and one bad-ass zed!
Worldwide Infection
Any brain-eating zed currently roaming the earth has the potential to fully contaminate the world of the living. No matter how an outbreak spreads, its all starts with one zombie—maybe even you! If you have the ambition to be Patient Zero, you must first squeeze out a teaspoon of infected blood and get yourself to a highly populated area for about 30 days. Your main goal should be to quickly decrease the number of the breathers while increasing the infected horde.
For a better understanding of what a worldwide outbreak would look like, we’ve created a best-case model covering 160 days. It clearly demonstrates your infectious potential. However, many factors, such as population density, geography, and the effectiveness of the human resistance could alter the real-world results. Remember, zed plans never go according to plan, so be prepared for the unexpected.
Someone’s been infected! Perhaps thanks to you, the first humans have succumbed to the z-virus and withstood zombification. Initial success isn’t just dumb luck; as mentioned before, we rely on the fact that the newly infected are often misdiagnosed and not properly treated with preventative termination. For this reason, three out of five new zombies survive the first 48 hours, and 56 percent of all outbreaks last at least 8 days.
Once reanimated and unrestrained, the new recruits are free to quickly disrupt the human status quo. Remember, without aggressive networking, the horde’s effort will simply fizzle out. If you want to maintain a terrifying crisis level, we suggest you infect 75 humans during the outbreak’s incubation period. Yes, this sounds daunting, but with a 24-hour reanimation cycle, you won’t be working alone for long.
If the outbreak has survived the first 30 days, it has a real chance. At this point, zombie numbers should have escalated into the thousands. A horde this size is very capable of generating widespread panic. The living resistance will scramble to quarantine large metropolitan areas within military perimeters. With high-density populations trapped, the infection will spread rapidly.
Cities and small countries have the potential to collapse altogether, sometimes in as short as 28 days. To further spread the outbreak, you’ll need to penetrate containment perimeters. Review previous chapters for information on how to navigate obstacles and barricades.
If the outbreak is still raging after 160 days, containment perimeters have clearly been compromised. A global pandemic is now within reach. With multiple fronts battling a worldwide outbreak, humans will show signs of exhaustion, their supplies diminished. Soon even larger countries may be overrun by hundreds of thousands of hungry brain-eaters.
The infected horde will continue to multiply unless new, unconventional weaponry is successfully deployed against the horde. To prevent such a setback, targeting the humans’ high-tech installations becomes increasingly important (see “Other Human Infrastructures,” page 58). Toward the tail-end of the first year of infection, the total collapse of human civilization will be near. With any luck, you could soon be walking through the valley of the shadow of death, fearing no evil!
Reset your calendars to 1 A.Z.—After Zombie!
Infecting Animals
Depending on z-virus strain and their own biological makeup, some animals can experience zombification. The following creatures are the most susceptible to infection: apes, bears, bulls, cats, chimps, crocodiles, crows, dogs, elephants, gorillas, hippopotamuses, horses, komodo dragons, monkeys, pigs, rhinos, sharks, and wolves. A pretty impressive lineup—so would it be a good idea to invite infected critters into the horde?