They aren't mentioned specifically, but as Leon and Helena in particular saw the most involving the family (well, outside of Ada, who already seems to know all about this before the events of RE6), I would think the fact they can't find any signs of them to be telling. And at least in RE6, what the Family seemed to mostly be doing is covering their own asses after the situation, assassinating (or at least, trying to assassinate) both Carla and Simmons, and obviously separate themselves from them, so my guess is that their course of action isn't to follow-up on the C-Virus scenario. They may play a role in RE7, but I did read into the mentions as implying they're either busy doing something, in hiding, and the main pull-away being that it does give a bit more light to the post-Ada credits RE6 scene, and does leave the BSAA as being busy handling the cocoon situation and sending out a public message to not enter zones where there are giant cocoons as their hazardous and their busy handling the situations with them worldwide.
That's not to say RE7 couldn't be about this, and doesn't mean the family couldn't be in RE7, or even the BSAA couldn't be in RE7, but the post-credits scene in Rev 2 is now officially the 'farthest' we've seen in the RE timeline, and as it's almost certain RE7 is being announced later this year, I feel the post-credits scene was obviously building up on the two lingering plot threads that currently exist in the series right now, the post-RE6 threads and the Family situation (still out there, basically, Neo Umbrella members never found and neither the Family), and that Alex is in Natalia. They can explore whatever in RE7, but them mentioning both of these things and specifically mentioning that the BSAA busy made me think that RE7 may explore something else entirely. Though the BSAA being busy in 2012 doesn't mean they couldn't not be busy for 2014-2016, when RE7 most likely will be set in.