Point is,something from the other side of the world can nail you.
As for bio attack,sure,we can treat anthrax,but really,I see a threat more along the lines of Ebola,a designer version. IMO the next sneak attack of World War will be bio,cheap and easy to disperse,innoculate your guys with the vaccine and set it loose.Thats my guess.
How do prepare for everything? The answer is you can't. You can only prepare for what you think is the
most likelihood of events that may dramatically affect you and your area. Otherwise you might as well pack up and scurry off into the mountains and take on the bunker mentality of "living" that other so called survivalist forums promote and subscribe yourself to their paranoid thinking and mentality of fear from Bio attacks, Terrorist attacks, Nuclear plant fallout etc...