A. Early symptoms of the illness are much like the flu. After a short time (in some cases a day or two), more severe pneumonia-like symptoms may appear. Not all individuals with Legionnaires' disease experience the same symptoms. Some may have only flu-like symptoms, but to others the disease can be fatal.
2) Foods High in Vitamin E. Like vitamin C, vitamin E is a powerful antioxidant. Research suggests maintaining ample levels of vitamin E is crucial for maintaining a healthy immune system, especially among older people. To get your fill of vitamin E, look to these foods: wheat germ oil.
For more foods that may help boost your immune system, try adding garlic, foods high in probiotics (such as yogurt and kefir), and green tea to your diet. Chew BP, Park JS. Carotenoid action on the immune response. J Nutr. 2004 Jan;134(1):257S-261S.