Airborne anti-virus

Anderson universe
(Covers information from Anderson's universe)

Alice is contacted by the Red Queen following the betrayal of Albert Wesker. The Red Queen informs Alice that humanity will be destroyed within 48 hours by Umbrella and their Undead armies and the only hope is a new anti-virus created by Umbrella. This new anti-virus is a more potent and highly aggressive strain than the original, designed to seek out and kill anything infected by the T-virus on contact and is airborne, meaning that if released, it will span the globe and end the pandemic for good. However, the anti-virus is within The Hive in the ruins of Raccoon City, forcing Alice to return to the Hive. Guided by the Red Queen, Alice makes her way into the depths of the Hive where she discovers the only vial of the new anti-virus in the hands of Doctor Alexander Isaacs, the man who was responsible for the pandemic in the first place. Isaacs threatens to release the anti-virus in the closed environment of the Hive, preventing it from having any effect on the Earth's surface in order to force Alice's surrender. With the help of the Red Queen and Alicia Marcus, Alice and Claire Redfield are able to get free and chase Isaacs for the anti-virus. After apparently killing Isaacs, Alice is able to take the anti-virus from him and heads to the surface where she attempts to release it. Her attempt is thwarted by Isaacs briefly before he is killed by a clone of himself. Alice then drops the container holding the anti-virus upon the ground, shattering it and releasing the anti-virus. Seconds before the Undead reach her, the anti-virus takes effect and instantly kills the thousands of Undead along with Alice's infected cells, knocking her unconscious for several hours. Following its release, the anti-virus begins to spread across the globe and wipe out all of the Undead and varied mutations, but will have to travel on the winds and so could take several years to span the entire globe.

Further Notes

• In The Final Chapter novelization, Doctor Alexander Isaacs muses on the second anti-virus and considers releasing it inside the Hive which will derail Alice's plan to use it to end the Global T-Virus pandemic. During Isaacs' musings, its revealed that the anti-virus is devilishly difficult to produce, extremely unstable and it took thousands of tries just to create the one vial of it in existence. As a result, Isaacs chooses not to destroy the anti-virus as he needs it for his own use to end the pandemic once the Undead have wiped out the rest of humanity.