Almost an Apocalypse

Visions made Ada get infected with a parasite changing people into mindless beasts. Mutated worm gives her superhuman strength and unquenchable lust, while letting her stay almost human.
On a hunch she enslaves Francesco, a handsome guard from the laboratory. Controlling the desire becomes difficult as the parasite twists her mind.
When she rescues a young scavenger Tomek from a horde of monsters she realizes he is the key to fulfilling her life's purpose.
Will Tomek's mysterious bloodline help him save his sister from the Bloody Court and let her find the cure for the pandemic that she started? Or will vampires and werewolves take over the crumbling human civilization?