For those who have been in close contact

vaccine guidelines
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Klamath County Public Health notes

When exposed to COVID-19 by someone outside of your home, your last exposure is the last time you were with that person. When exposed to COVID-19 by someone inside your home, your last exposure is the last day of that person's isolation or quarantine.

CDC guidelines

Quarantine is used to keep someone who might have been exposed to COVID-19 away from others. Quarantine helps prevent spread of disease that can occur before a person knows they are sick or if they are infected with the virus without feeling symptoms. People in quarantine should stay home, separate themselves from others, monitor their health, and follow directions from their state or local health department. 

Quarantine is a strategy used to prevent transmission of COVID-19 by keeping people who have been in close contact with someone with COVID-19 apart from others.


DEFINITIONS
Exposure

Contact with someone infected with SARS-CoV-2, the virus that causes COVID-19, in a way that increases the likelihood of getting infected with the virus.

Close Contact

Someone who was less than 6 feet away from an infected person (laboratory-confirmed or a clinical diagnosis) for a cumulative total of 15 minutes or more over a 24-hour period (for example, three individual 5-minute exposures for a total of 15 minutes). Learn more about close contact, including exceptions to the definition for K-12 schools.

Who does not need to quarantine

If you came into close contact with someone with COVID-19 and you are in one of the following groups, you do not need to quarantine.

You should wear a well-fitting mask around others for 10 days from the date of your last close contact with someone with COVID-19 (the date of last close contact is considered day 0). Get tested at least 5 days after you last had close contact with someone with COVID-19. If you test positive or develop COVID-19 symptoms, isolate from other people and follow recommendations in the Isolation section below. If you tested positive for COVID-19 with a viral test within the previous 90 days and subsequently recovered and remain without COVID-19 symptoms, you do not need to quarantine or get tested after close contact. You should wear a well-fitting mask around others for 10 days from the date of your last close contact with someone with COVID-19 (the date of last close contact is considered day 0).

Who should quarantine?

If you come into close contact with someone with COVID-19, you should quarantine if you are in one of the following groups:

  • You are ages 18 or older and completed the primary series of recommended vaccine, but have not received a recommended booster shot when eligible.
  • You received the single-dose Johnson & Johnson vaccine (completing the primary series) over 2 months ago and have not received a recommended booster shot.
  • You are not vaccinated or have not completed a primary vaccine series.

What to do for quarantine

  • Stay home and away from other people for at least 5 days (day 0 through day 5) after your last contact with a person who has COVID-19. The date of your exposure is considered day 0. Wear a well-fitting mask when around others at home, if possible.
  • For 10 days after your last close contact with someone with COVID-19, watch for fever (100.4◦F or greater), cough, shortness of breath, or other COVID-19 symptoms .
  • If you develop symptoms, get tested immediately and isolate until you receive your test results. If you test positive, follow isolation recommendations.
  • If you do not develop symptoms, get tested at least 5 days after you last had close contact with someone with COVID-19.
    • If you test negative, you can leave your home, but continue to wear a well-fitting mask when around others at home and in public until 10 days after your last close contact with someone with COVID-19.
    • If you test positive, you should isolate for at least 5 days from the date of your positive test (if you do not have symptoms). If you do develop COVID-19 symptoms, isolate for at least 5 days from the date your symptoms began (the date the symptoms started is day 0). Follow recommendations in the isolation section below.
    • If you are unable to get a test 5 days after last close contact with someone with COVID-19, you can leave your home after day 5 if you have been without COVID-19 symptoms throughout the 5-day period. Wear a well-fitting mask for 10 days after your date of last close contact when around others at home and in public.
    • Avoid people who are immunocompromised or at high risk for severe disease, and nursing homes and other high-risk settings, until after at least 10 days.
  • If possible, stay away from people you live with, especially people who are at higher risk for getting very sick from COVID-19, as well as others outside your home throughout the full 10 days after your last close contact with someone with COVID-19.
  • If you are unable to quarantine, you should wear a well-fitting mask for 10 days when around others at home and in public.
  • If you are unable to wear a mask when around others, you should continue to quarantine for 10 days. Avoid people who are immunocompromised or at high risk for severe disease, and nursing homes and other high-risk settings, until after at least 10 days.
  • Do not travel during your 5-day quarantine period. Get tested at least 5 days after your last close contact and make sure your test result is negative and you remain without symptoms before traveling. If you don’t get tested, delay travel until 10 days after your last close contact with a person with COVID-19. If you must travel before the 10 days are completed, wear a well-fitting mask when you are around others for the entire duration of travel during the 10 days. If you are unable to wear a mask, you should not travel during the 10 days.
  • Do not go to places where you are unable to wear a mask, such as restaurants and some gyms, and avoid eating around others at home and at work until after 10 days after your last close contact with someone with COVID-19.

After quarantine

  • Watch for symptoms until 10 days after your last close contact with someone with COVID-19.
  • If you have symptoms, isolate immediately and get tested.

Quarantine in high-risk congregate settings

In certain congregate settings that have high risk of secondary transmission (such as correctional and detention facilities, homeless shelters, or cruise ships), CDC recommends a 10-day quarantine for residents, regardless of vaccination and booster status. During periods of critical staffing shortages, facilities may consider shortening the quarantine period for staff to ensure continuity of operations. Decisions to shorten quarantine in these settings should be made in consultation with state, local, tribal, or territorial health departments and should take into consideration the context and characteristics of the facility. CDC’s setting-specific guidance provides additional recommendations for these settings.