Tamiflu is not panacea. It has to be given early in the course of the illness to be effective. Then it only mitigates the severity or acuity of the flu. In other words, when used properly, it makes your case of flu milder, it doesn`t cure it. Since most people, most particulrly the elderly, can`t always differentiate between the flu and the common upper respiratory infection (ie cold. sinusitis, etc) its use is somewhat problematic.
If such a pandemic comes to pass, know the name of a good pulmnologist/intensivist and remember the name Xigris. This is a drug that interrupts the physiological changes brought about by sepsis. It`s not used as much as it should be because it is tremendously expensive. The last price I recall hearing was more than $2,500/dose. Basically it trys to buy your body time for the anti virals (in this case) and your immune system to fight back. In the ICU the hope is to keep you off the ventilator or get you off quicker in cases of pnuemonia or respiratory failure secondary to sepsis. It`s use is severely frowned upon because of cost.
To quote Dr. McCoy from Star Trek, "I can do more for you if you eat right and exercise."