1-12-22: The quarantine instructions for the general public and for healthcare personnel have been updated and include quarantine for some fully vaccinated exposed persons. This webpage is currently under revision to reflect the updated recommendations.
For the general public, please refer to the LAC DPH Isolation and Quarantine of the General Public Guidelines (1-11-22) and the LA County Quarantine Health Officer Orders for the most current information.
For healthcare personnel, please refer to the relevant guidelines: LAC DPH Infection Prevention Guidance for Healthcare Personnel and Guidance for Preventing COVID-19 in EMS Personnel
10-21-21: Removed Students at Institutes of Higher Education section. Fully vaccinated exposed students are no longer subject to a modified quarantine.
10-18-21: Changed the timing of recommended testing of fully vaccinated persons post exposure to 5-7 days in alignment with CDC updated recommendations.
Currently authorized vaccines in the United States are highly effective at protecting vaccinated people against symptomatic and severe COVID-19. Fully vaccinated people are less likely to become infected and, if infected, to develop symptoms of COVID-19. There is evidence, however, that fully vaccinated people who do become infected with the Delta variant can be infectious and can spread the virus to others.
These recommendations for the management of fully vaccinated persons post exposure are adapted from the CDPH Guidance on Isolation and Quarantine for COVID-19 Contact Tracing and the following CDC guidelines:
A person is considered fully vaccinated ≥2 weeks following the receipt* of:
* This guidance also applies to COVID-19 vaccines that have been listed for emergency use by the World Health Organization, certain U.S. clinical trial participants, and those who received 2 doses of any combination of Pfizer, Moderna, or WHO-listed vaccine at least 17 days apart. See CDC Annex for full details.
Refer them to People Who Have Been Fully Vaccinated section of Quarantine and Other Instructions for Close Contacts available at ph.lacounty.gov/covidquarantine.
Refer to setting-specific guidelines or protocols for more information.
*Note: testing is required for international air travelers regardless of vaccination status. All travelers are required to have a negative COVID-19 test result no more than 3 days before they board a flight to the United States (or documentation of recovery from COVID-19 in the past 3 months). In addition, while quarantine is not needed for fully vaccinated person upon arriving in the United States, a viral test 3-5 days post travel is recommended. See CDC International Travel During COVID-19.
Refer to LAC DPH Travel Advisory and Guidance for additional details.
Immunocompromising conditions- CDC includes the following conditions that might affect the response to the COVID-19 vaccine: receiving chemotherapy for cancer, hematologic malignancies, being within one year from receiving a hematopoietic stem cell or solid organ transplant, untreated HIV infection with CD4 T lymphocyte count < 200, combined primary immunodeficiency disorder, and taking immunosuppressive medications (e.g., drugs to suppress rejection of transplanted organs or to treat rheumatologic conditions such as mycophenolate and rituximab, receipt of prednisone >20mg/day for more than 14 days). For more information, see Interim Public Health Recommendations for Fully Vaccinated People.