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Isolation & Quarantine

COVID-19 Isolation & Quarantine

If you have tested positive for COVID-19, by law, you must follow the instructions below to help stop the spread of disease. (Colorado Revised Statute § 25-1.5-102(1).)

Isolate: Stay Home & Separate from Others

  • Stay home and separate yourself from the people and animals in your home.
  • Stay in one room and away from other people in your home as much as possible.
  • Use a separate bathroom. If one is not available, disinfect all surfaces you touch before leaving the bathroom or have a member of the household disinfect after waiting as long as possible before entering, and wash hands thoroughly afterward.
  • Have another member of your household care for your pets. If you must care for your pet, wear a face covering and wash your hands before and after you interact with your pet.

Isolate Until: You have had no fever for at least 24 hours — without the use of fever-reducing medicines, AND your symptoms are improving, AND it has been at least 5 days since your illness began.

If you don’t have symptoms you may stop isolating 5 days after you received a positive test unless you develop symptoms. If symptoms develop during your isolation or quarantine period, you must extend the period through the first 5 days of having symptoms.

Wear a mask for the next 5 days when around others. If you are unable to wear a mask for an additional 5 days, you must isolate for the full 10 days.


Family, Friends, & Co-Workers

Anyone who was within 6 feet of you for 15 minutes or more (cumulative, within a 24-hour period) when you were sick (also known as a close contact) and is NOT up-to-date on COVID-vaccinations (including a booster if due) is required to quarantine.

People who don’t need to quarantine after exposure include:

  • People age 5 and older who are up-to-date on all recommended vaccine doses, including third doses and additional primary shots for some immunocompromised people.
  • People aged 5-11 years who have completed the primary series of COVID-19 vaccines.
  • People who have tested positive for COVID-19 (with a viral test, not an antibody test) within the past 90 days.
  • If you were exposed but you don’t need to quarantine, you should still wear a well-fitted mask around others for 10 days and avoid high risk people and settings. Get tested five days after exposure. Watch yourself for symptoms for 10 days after exposure. If you start to feel symptoms in the 10 days after exposure, get tested immediately and start isolating.

All contacts, regardless of vaccination status should seek testing 5 days after their exposure.

If you need help with food, health care, mental health, housing, child care, safety, or financial or legal assistance visit If you have any questions about these instructions, please contact the Boulder County Public Health Communicable Disease team at 720-776-0822.

Travel Documentation

Boulder County Public Health does not provide COVID-19 documentation for the purpose of travel.

COVID-19 Travel Recommendations by Destination

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Boulder County Public Health

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