Symptoms
The CDC believes at this time that symptoms of COVID-19 may appear in as few as 2 days or as long as 14 days after exposure.

Symptoms include:

Fever
Cough
Shortness of breath; difficulty breathing

Prevention
Currently, there is no vaccine to prevent COVID-19. However, experts at the Centers for Disease Control and Prevention (CDC), hospitals, drug manufacturers, and laboratories across the country are working collectively to develop treatments and vaccines.

The CDC recommends everyday preventive actions to help protect against and prevent the spread of respiratory diseases, including:

Wash your hands with hot, soapy water for at least 20 seconds.
Cover your mouth, ideally with an elbow, when you cough or sneeze.
Get a flu shot, not necessarily because it will prevent the spread of coronavirus, but so that you stay healthy and out of the doctor's office.
And, if you're not feeling well, stay home from work and get better.