Contact Tracing

Contact tracing identifies people who might have been exposed to another person known to have COVID-19. Exposed people are called contacts. Contacts are at risk of getting infected themselves. Contact tracing helps to slow the spread of COVID-19 by having contacts self-quarantine away from others. We have performed contact tracing for many years for diseases like foodborne illnesses, measles, and tuberculosis.

5 Steps to Contact Tracing 

Step 1Step 2Step 3Step 4Step 5
IsolateCircleTested Positive_CircleCall_CircleContact Tracer_CircleQuarntine_Circle

If you become ill with COVID-19 symptoms you should begin home isolation and get tested immediately.


If you test positive, local public health will be notified by the Colorado Department of Public Health (CDPHE) of your positive test result. 



Our case investigators will call to perform a case investigation and ask for a list of the people you had contact with while you were contagious. TCHD case investigators will also provide you with information about safely self-isolating while you are sick. If you are unable to access services during this time, your case investigator will connect you with a member of our Community Services Branch to provide you with additional support.


Our contact tracers will reach out to your contacts to contain the spread of the virus.Contact tracers are trained to manage health and other sensitive information in order to protect your privacy. We do not share with contacts where or who they came in contact with that may have exposed them.


We will ask contacts to self-quarantine and stay away from others for 14 days starting from the day they were possibly exposed. 

Monitor for symptoms and notify us if symptoms develop.

Some questions you or your contacts may be asked are:

  • Can you verify your name, address, and date of birth?
  • Did you develop symptoms since you were exposed?
  • What are your symptoms and when did they start?
  • What is your occupation?

When we call, we will not:

  • Ask for your Social Security Number
  • Request any Credit Card Information
  • Ask about your residency or immigration status
  • Expose an individual’s health or personal identifying information to the public, the media, employers or others without the individual’s permission, or except as authorized by law

During self-quarantine you should:

  • Stay at home and away from others for 14 days
  • Take your temperature twice a day
  • Monitor for symptoms
  • Wear a mask or cloth face covering if you need to be around others and are not having COVID-19 symptoms. 

What should I do after my self-quarantine?

  • If you do not develop COVID-19 symptoms during your 14 day self-quarantine, you should continue to protect yourself and others by wearing a mask, social distancing, and washing your hands frequently. 
  • If you do get COVID-19 symptoms during your self-quarantine, isolate yourself and get tested immediately. Isolation ends when:
    • You have had no fever for at least 3 days without using fever-reducing medication. AND 
    • Your symptoms have greatly improved for at least 3 days. AND 
    • At least 10 days have passed since your symptoms first appeared. If after 10 days, fever is still present OR respiratory symptoms are not better, then stay home until those symptoms have improved for at least 3 days  

Other Contact Tracing Resources