The US actually has a strong ability to handle this. We've dealt with plenty of deadly diseases before, and the patients are isolated. Yes, I understand the worry, but it is not airborne but fluid and bacterial. The best way to prevent from getting it? Wash your hands (ya nasties, seeing people walk out of the bathroom without doing so makes me want to vomit), wear a mask, and don't touch anyone that looks like they've been dragged in by the cat.
Easy as that; just make sure to keep your hands clean, and shower regularly. Getting yourself hyped up and paranoid is going to make things worse.