While many mobile phones are tucked away in pockets or purses, chances are that anyone you meet in the US owns one. People in the US also are carrying around a much more ancient invader at roughly the same rate. Many encounter the Epstein-Barr virus at a young age which can cause infectious mononucleosis, or mono. People typically recover relatively quickly from this once-in-a-lifetime condition once the Epstein-Barr virus has settled down after establishing its deep-rooted refuge in certain cel