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.
Eat a variety of fruits and vegetables to keep your immune system going strong. Photo Credit Jupiterimages/Creatas/Getty Images. Getting enough vitamins and minerals will support your immune system to help fight off colds, flu and other illnesses.The best way to get enough immune-boosting nutrients is to eat a wide variety of vegetables.at a variety of fruits and vegetables to keep your immune system going strong. Photo Credit Jupiterimages/Creatas/Getty Images. Getting enough vitamins and minerals will support your immune system to help fight off colds, flu and other illnesses.