text: what is the best flu prevention? enviroment, work place conditions, shaking hands with people, ie.? wash your hands constantly almost obsessively if you work in crowded environments.  get at least 8 hours of sleep coplete with a balanced diet and exercise.  it's all about maintaining your immune system.  work in a office, day care, or going into a plane? try taking airborne which is a vitamin supplement that boosts your immune system with vitamin c and other helpful vitamins, minerals, & antioxidants.