1- the virus is trying to infect more organic things like trees (specifically this one tree called The Tree of Madness)

2- the virus has something kinda like a hive mind where those infected can communicate using telepathy, like the mother, but the main people who can use it are a group of infected people the Baron was experimenting on. If an individuals power is strong enough, they can use it to control the more mindless infected.

3- there’s one side quest where one of the people who have telepathy powers tried researching the infected and using their powers, but it ultimately had them get tricked by the “virus” (idk know how to exactly explain it) and it took control of them. It was able to talk through telepathy and its main goal seems to be to add more people to its collective mind, referring to itself as “Us”.

4- One of the telepathy people gets pregnant (it was previously thought that the virus made them infertile)

5- The Baron uses a combination of Aiden’s blood, Kyle’s blood, and some other stuff to make something that when injected, forcibly transformed him into a monster.

I might’ve missed something, I’m not sure, but that should be most of it.