Number 1 is nutrition and supplementation. Anything you can do to help your cells survive and prosper can go a long way in protecting you from viruses in general. Well, Ken, that's all well and good, but what supplements do you suggest? Great Question Ken, my first is always Vitamin C. It has the ability to take up free radicles which releases that duty from your immune system, allowing it to focus on other things, like viruses. :-) It is reported that in order to get the most out of Vitamin C you should take it at least 3 times a day or to bowel tolerance. Meaning, if your stools become really loose, back off your dosage until normal bowel movements return. The reason is, within 3-6 hours the mineral is out of your system, thus it is no longer providing maximum support. My next is Collodial Silver. Although it may not have an effect on many viruses, it can eliminate up to 600 different microorganisms, leaving your good ones alone. This also frees up your organic immune system to focus on the flu virus. Because honestly, the best defense against any virus is your immune system. Of course, this is just my opinion and experience.