Keeping the immune system primed by taking in whole organic nutrient rich food will fight and protect against infection. Then there are numerous herbs that are anti-biotic and help fight infections. Colloidal Silver , garlic, DQ's Oleander tea, elderberry, Royal jelly, Lavender, oregano oil, cranberries, even Sea Salt and seaweed. Fight disease by staying away from pesticides, preservatives , petrochemical products, and fertilizers, processed foods, fluoridated chlorinated water, vaccines, etc.