It's a common virus that requires a malicious code to duplicate itself
When_was_resident_virus_developed
A transient virus has a life that depends on the life of its host; the virus runs when its attached program executes and terminates when its attached program ends. A resident virus locates itself in memory; then it can remain active or be activated as a stand-alone program, even after its attached program ends.A resident virus don't search for host when they are started.A resident virus can stsys active in the background.
that lives in your computer
that lives in your computer
As far as I know Resident Evil 0, 1, 2 and 3 are the games that are about the T-Virus.
For information about the Resident Evil T-Virus, Planet Resident Evil has a complete explanation of the history of the virus and how it is expanded upon in each game.
Rabies Virus.
Resident Evil 4 is completely unrelated to the T-virus; instead, the "infection" is a different parasite called Las Plagas (the plague).
Umbrella Corp.
A Nonresident is a computer virus that is not stored on the hard drive of the computer system. Rather, the virus makes a home in an executable file that infects a computer each time it is accessed and run. While Resident viruses do not search for hosts when they are started. Instead, a resident virus loads itself into memory on execution time and transfers control to the host program.
Uroboros-new virus
There are about nine types of computer viruses. They include the boot sector virus. the browser hijacker, direct action virus, file infector virus, macro virus, Multipartite Virus, Polymorphic Virus, Resident Virus, and Web Scripting Virus.