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.
Scientific research shows that some foods contain compounds that enhance immune system function and make humans better able to fight infection. These compounds may not prevent infections from developing, but they help activate infection-fighting white blood cells and trigger increased production of cells that kill foreign invaders.