1) If you display influenza-like symptoms stay home. In fact in the spirit of all things American you should probably take pre-emptive action and just stay in one small confined space without contact with other contagious humans for the next two weeks.
2) Wash your hands frequently, or wear rubber gloves to avoid contact with contaminated surfaces. One convenient way to stay flu-free on the go is to invest in a spray bottle and fill it with soapy water. Whenever you need to touch anything just quickly wipe it down before hand.
3) Avoid touching your nose, mouth or eyes. Recent studies have shown that even visual contact with your mouth or nose or the mouths and noses of others can be highly infectious. Avoid looking in mirrors and wear dark sunglasses if it is necessary that you leave your confined space (see point 1).
4) Cover your mouth when coughing or sneezing. A tissue will suffice however if you have a gas mask or can procure one easily then this will offer you added protection. Another option is to burn your clothes at the end of each day.
5) Use an alcohol based sanitizer, these are available at more drug stores. Alternatively you can mix 2 parts vodka with 1 part sulphuric acid and apply to any skin exposed to air or human breath. Note: this may remove a layer of epidermis depending on your sensitivity levels. The Department of Homeland Security takes no responsibility for injuries incurred.
6) Keep frequently touched surfaces clean. It is advised that your wrap the most frequently used objects such an the telephone receiver or your keyboard in Saran wrap* and regularly wipe down with disinfectant.
7) Try not to use any objects touched or used by other people. Again we refer you to point 1 and suggest that solitary confinement is the safest way to avoid infection. However if this is not possible we suggest wearing sterilized overalls when leaving your confined space and keeping all bodily orifices plugged when in the company of others.
8) While keeping all the above points in mind we strongly suggest that you also continue with a healthy and normal lifestyle including outdoor exercise.
9) If you run out of alcohol gel for cleaning your hands, drink liberal amounts of Jack Daniels instead.
10) Replace all toilets in your home with Asian squat style toilets to avoid touching other things people have used. Encourage your workplace to make the same upgrades.
The above has been a clarified version of what you could find, but probably not understand on: http://www.flu.gov.
Remember, in case of emergency everyone jump out the window
* Please use the original Saran wrap (pre July 2004), although more toxic offers better protection against spoilage and flavor loss.