In the post credits scene in World Beyond the scientist woman says her team was in Toledo Ohio at a conference when it all went down, is that the group that Daryl is hunting Walkers for and how he ends up in France?
and what the heck did they inject into that Walker that made it go bezerker?
It could be affiliated/or them, for sure. He was in upstate Maine when he got taken.
But this group seems pretty well coordinated, no CRM, but wouldn't be surprised if they were aware of each other. Who knows about the serum they injected, they have been experimenting with stuff for quite awhile and must have found something that doesn't kill the host--at least within seconds.