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Gabriel Gray, Chandra Suresh's supposed Patient Zero
In medicine, Patient Zero (also called the "index case") refers to the original source of an outbreak of a contagious illness within a population (that is, the origin of the outbreak from whom all other infections are ultimately derived) or to the most significant case within the population. In Heroes, the term refers to Gabriel Gray.
Chandra Suresh told his son Mohinder two days prior that he believed he was close to discovering the "Patient Zero" for his theories about new human evolutionary traits, and had tracked him down to Queens, New York.
While searching for Mohinder the lizard, Eden and Mohinder overhear an answering machine message left for Chandra by Sylar. Mohinder tells Eden that he found a tape of a conversation between his father and a man named Sylar, whom Mohinder claims his father believed was Patient Zero.
Eden discovers Chandra's journal hidden in Chandra's laptop after Mohinder throws it across the apartment. She then discovers Sylar's address in Queens—where Chandra stated he had located Patient Zero.
Chandra Suresh arrives in New York City and meets with Gabriel Gray, a name from his list of identified potential evolved humans. After some initial testing, Chandra is disappointed, and believes Gabriel to be genetically normal. Later, however, Gabriel returns to Chandra's apartment and displays the telekinetic abilities that he gained from Brian Davis, becoming the first evolved human Chandra meets in New York.
After securing Sylar, Mohinder says that Chandra's research is based on Sylar being Patient Zero. Using Sylar's DNA from a spinal fluid sample, Mohinder identifies the four genes that are the basis of Chandra's research.
"Where are you going?"
"I found a tape of a conversation my father had with a man named Sylar, a man he believed was Patient Zero."
"My father did want answers. He called you Patient Zero. You're the template he used to create this formula. You're the key to unlocking his secret. As much as I'd like to, killing you will not give me what I need."
- By the time Chandra told Mohinder he was close to finding his Patient Zero, he had already assembled a list of identified evolved humans, and Sylar, then known as Gabriel Gray, was the first he chose to contact. His reasons for choosing Gray as his first subject are unknown. It is presently unclear why, if Chandra had already met Gabriel Gray six months prior and witnessed him using telekinesis, he told Mohinder he was "close" to finding his "Patient Zero".
- Chandra's actions in Six Months Ago and the fact that he had already identified many other potential evolved humans (and even identified one while he was still in Madras—Sanjog Iyer) indicate that it's quite likely that Sylar was merely the first evolved human he contacted in New York City. If by "Patient Zero" Chandra merely meant that Sylar was his first confirmed case, then he is using the term in quite a different sense than it was intended.
- It is possible that his use of the term "Patient Zero" might have some greater significance. Typically, referring to someone as "Patient Zero" would imply that they are the earliest case or the case from which other cases developed. Given that there are people on the list who are quite likely older than Sylar, and that Adam Monroe exhibited his powers in 1671, it's unlikely that Suresh meant that Sylar was the first individual to develop powers or was the earliest-born individual with powers. However, it's still possible, though unlikely, that Chandra believed Sylar was pathologically responsible for others developing their powers. Ironically, Sylar being "Patient Zero" can be viewed as an antonym; he regularly kills and ends the use of powers by others, collecting said powers for himself.
- Marvel Studios Mutant X TV series had a character named Gabriel Ashlock or Patient Zero, similar to Heroes' Gabriel Gray/Patient Zero. Ashlocke was considered the most powerful of new mutants as he had the combined abilities of all four classes: Elemental, Feral, Molecular and Psionic while Sylar is the first mutant the Company finds with more than one ability. We later find out that he even killed both his parents (Sylar kills his adoptive mother and nearly kills his biological father). Also, Ashlocke was a mutant Adam Kane experimented on whereas Sylar is a mutant the Company, founded under Adam Monroe, experimented on.
- This isn't the only reference to the series as a character on the show is named Victoria Pratt.
Activating Evolution • The algorithm • Blood recipients • Chandra's files • Chandra's journal • Coyote Sands films • The Genesis files • Human Genome Project • The key • The list • The map • The Mozaic file • Patient Zero • Sanjog's file
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