In Resident Evil: Afterlife, Alice's superhuman abilities have been taken away by Albert Wesker, who injected her with a serum that disabled her T-virus cells; however, at the end of Resident Evil: Retribution, Wesker injects her with the T-virus and restores her powers, saying that Alice and her powers are the last, ...
Alice is only infected after being captured at the end, by Umbrella scientists as an experiment. The whole Raccoon City outbreak (Resident Evil: Apocalypse) was caused by these same scientists ordering the Hive to be reopened, releasing the zombies and lickers stuck inside.
The first strain of the T-Virus was separated from the Progenitor Virus, establishing its creation in 1978, when Marcus made a breakthrough in applying it to leech DNA. This resulted in the leech creatures observed in Resident Evil 0.
Alice (THE PERFECT ZOMBIE) Resident Evil Explained
Is Jill immune to the T-Virus?
During her ordeal in Raccoon City, the T-Virus found its way to Jill's system. It's thanks to the efforts of Carlos Oliviera that Jill got a cure to the virus. Wesker will use Jill's newfound "immunity" to make her a test subject for the Uroboros Virus, turning Jill into a superhuman agent under Wesker's control.
Alice remembers that an anti-virus is in the lab, but they find it missing. Spence and Alice remember that Spence was the thief who stole and purposefully released the T-virus, and hid the T-virus and anti-virus on the train.
Leon and Claire are never bitten in a cutscene. In gameplay you get shot all the time and continue like nothing happened, but in cutscenes gunshots are severe. It's the same with RE and zombie bits. In gameplay they are just an attack to deplete health, while in cutscenes they cause infection.
The once invincible, bullet-dodging Wesker deliberately infects himself with the Uroboros virus as a last resort after having been weakened by an overdose of the virus suppressant PG67A/W that was injected by Chris and Sheva.
Initially developed by Umbrella Pharmaceuticals in the late 1960s, the primary goal of the "t-Virus Project" was to effectively eliminate the need for a large-scale conventional army and generate revenue for their eugenics program, the Wesker Project.
The Infected then broke into the room and apparently bit and infected Alice, but due to her natural immunity, Alice became a Carrier and did not suffer any symptoms (apart from her left eye partially turning red).
In Resident Evil: Afterlife, Alice's superhuman abilities have been taken away by Albert Wesker, who injected her with a serum that disabled her T-virus cells; however, at the end of Resident Evil: Retribution, Wesker injects her with the T-virus and restores her powers, saying that Alice and her powers are the last, ...
All t-Virus variants following this one retained this trait. PERFECT STRAIN – Developed by Sergei Vladimir's research team in Russia. Capable of transforming a majority of infected humans into a zombie within minutes.
James Marcus mixed the Progenitor Virus with leech DNA to create the T-Virus. T for “Tyrant” as a stab at Spencer. William Birkin took full credit after Marcus' assassination.
In Resident Evil: Apocalypse, Alice discovers that she has been genetically altered by exposure to the T-virus. Alice is explained to have adapted to the changes from the T-Virus, merging human characteristics and enhanced strength, speed, and agility as well as a limited degree of superhuman healing.
Alice is a composite engineered being, created after the likeness of one of the director's daughters and given the memories (in one of the later subsequent films) of another. She was infected with the T-virus but proved to be unaffected by the virus itself, thanks in part to her genetic structuring.
After being bitten by one of the zombie dogs, Billie becomes infected with the virus, but thanks to Albert and Umbrella's experiments on her when she was younger, she's able to partially resist the undead urge for flesh.
Wesker was originally supposed to help Dr. Spencer develop immortality to create a race of superior humans, but he defected and decided that he himself was the chosen one to become a god and rule the new world into the next stage of evolution.
In short, Albert Wesker is nothing but a complete power-hungry narcissist, constantly manipulating and using everyone in his life for his own selfish intentions, believing he has the right to be a god and rule over the world he has ravaged in his own sick image.
It's not really known why eyes, specifically, are the most common trait developed in infected individuals. More wide ranging mutations exist, but Eyes do indeed seem to be selected for as often as not. It may be a quirk of the G-Virus itself.
It was created by Lee Byeong-chan, a researcher turned biology teacher, in order to remove the concept of fear in humans and replace it with rage by using Toxoplasmi Gondii with high testosterone levels from the lab hamster he conducted experiments on. The virus affects amygdala, which controls the limbic system.
They then proceeded with Phase 2, which involves infecting them with the T-Virus to grant them the aforementioned "gifts." Unfortunately, only Albert and Alex survived the procedure. By the time of Umbrella's demise, Albert and Alex would continue the project in their own ways.
A white-headed capuchin monkey; that is host to the virus is smuggled into the country. James "Jimbo" Scott, a worker at an animal testing laboratory, is infected when he steals the monkey to sell on the black market.
