Swine flu is just another flu occuring outside the main flu season. People are concerned because only a few people have made antibodies to it. We all meet influenza bugs every year. When our immune system is healthy it cascades into action. We might get a fever to help make our body an uncomfortable environment for the bugs and we might feel tired and achey as our body fights to regain control.
The way to support your bodies intelligent actions is to go with it, not try to suppress it's attempts to heal. Homeopathy is an excellent and effective way to support your healing responce.
Check out what Dr Mercola has to say on the subject for general advice and ideas on how to prevent flu without using dangerous drugs and vaccination