[SPOILER] Ending detail I don't understand in Requiem

https://preview.redd.it/thklkcby5gng1.png?width=1286&format=png&auto=webp&s=193b8888cd1fcd0ff5a25e82e96cee1a18e9dcdf

Hello everyone,
I'm usually an idiot when it comes to understanding lore in games so please have patiencie.
In the canon ending, why did Victor take a shot of Elpis with him? Is it clear what he wanted to do with it?
Does the virus kill him, so he took one shot for himself?
Thanks!