Wash your hands often with soap and warm water for at least 20 seconds.
Clean and disinfect frequently touched objects and surfaces.
Avoid touching your eyes, nose, and mouth with unwashed hands.
Cough and sneeze into your upper sleeve or cover your cough or sneeze with a tissue, then throw in the trash. Wash hands.
Stay home when you are sick, except to get medical care. Call ahead before you visit your doctor or emergency room.
Avoid contact with people who are sick.
CDC: How to Protect Yourself from COVID-19 (Spanish, Chinese)