Infection Say: in-fek-shun When germs get inside your body, they can multiply and cause an infection. Your body's immune system fights off the germs with special cells. It can become a full-on fight against the nasty invaders – and you won't feel better until your body wins! Sometimes when you get sick, it's because you have some kind of infection. If your body's having a little trouble fighting the infection by itself, your doctor may prescribe medicine like antibiotics to help, so just sit back, get some rest, and let your body do the work! Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.