To infect you, germs first have to get onto or inside your body. You can get infected by touching a contaminated person or object. You can also get infected by breathing contaminated air. This is why good hand hygiene and other infection control advice, such as wearing a mask or a hospital gown, are so important. Hand hygiene means handwashing with soap and clean, running water. Or, you can use alcohol-based gels or foams that don't need water.