Chances are you are confused or in the dark regarding something related to Biohazard. Why not then ask another fan? Put any questions here, simple or complex, and see if someone in the community can help.
If you have any questions regarding viruses or monsters, I recommend checking these threads first, and perhaps asking there instead:
Progenitor Virus
t-Virus
G-Virus
t-Veronica Virus
t-Abyss Virus
t-Phobos Virus
Uroboros Virus
C-Virus
t+G Virus
A-Virus
Kodoku Virus
t-Howard Virus
Las Plagas
The Mold
If you have any questions regarding viruses or monsters, I recommend checking these threads first, and perhaps asking there instead:
Progenitor Virus
t-Virus
G-Virus
t-Veronica Virus
t-Abyss Virus
t-Phobos Virus
Uroboros Virus
C-Virus
t+G Virus
A-Virus
Kodoku Virus
t-Howard Virus
Las Plagas
The Mold