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.
One of the best ways to stay healthy is by choosing an array of foods to boost your immune system. Eating healthy, antioxidant-rich foods such as fruits and vegetables, whole grains, and lean protein is an important part of maintaining good immune system health to help ward off infection and illness.
An excellent source of vitamin C is citrus fruit. Many vegetables are also excellent sources of vitamin C, such as broccoli, kale, bok choy, turnip greens, beet green, mustard greens, collard greens, Swiss chard, and asparagus. Many of the B-vitamins are also very important in supporting a healthy immune system.