Everyone has to make their own choices. As for me, I am going to prepare for every possibility that I can. I saw that bird flu was and still is a threat. It just has not made it here yet. I was also concerned about the H1N1 and was prepared for that. As soon as I had recognizable symptoms, I took action. Regardless of whether or not it actually was H1N1, it did slow me down for about a day and a half. I zapped a few times during that time and so was never severely ill.
I am preparing for Ebola too. Do not know if it will work but I know that my ParaZapper MY is what I will count on if it does show up. That along with CS and vitamin C. The wife and I are ready to shelter in place or to bug out to a remote place if necessary.