phenomen a book

In the early 21st century A.D humanity faced a virus that transformed it into a flesh eating monster, one that looked human but yet wasn''''t fully human. That however was ancient history. These stories happen long after in the 2800s as the virus evolved to full sentience in a few centuries or so. The infected became a lot more human with the ability to speak and think freely. Now what comes after being human and think freely? What has been ingrained heavily in human nature since our beginnings? Commerce, prejudice and innovation.