Wash hands! Reduce the spread of germs!
According to the CDC hand washing is the single most effective way to stop the spread of germs. Wash them with warm water and soap throughout the day and after coughing, sneezing, using the bathroom, or changing diapers as well as before and after eating.
Adding a dollop of hand sanitizer after drying is a great idea too!
Who is Dr. Jim: https://youtu.be/q55NZZZtLX8