How can the human body be protected from infection?
Vaccines, antibiotics are the major ones. Vaccines inject a dead virus or disease to have your body fight it off and become immune to the disease or virus. Antibiotics like vitamins, are something you take daily to protect the body.
Well, You need to help out your immune system (the part that fights off infections) by taking care of your health, eating healthy foods, having shots and med check ups taking regular showers. Exercising.