A-Z Index
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ALL
Instagram Facebook Twitter Youtube
Reporting LAHAN Alerts

COVID-19

LAC DPH Interim Quarantine & Work Restriction Guidance for Fully Vaccinated Persons


Key Points
  • Fully vaccinated asymptomatic members of the public do not need to quarantine after exposure, with exceptions for inpatients, residents in healthcare settings, and residents of high-risk residential congregate settings.
  • Fully vaccinated asymptomatic workers in healthcare and non-healthcare settings do not need to be restricted from work after exposure.
Background

Currently authorized vaccines in the United States are highly effective at protecting vaccinated people against symptomatic and severe COVID-19. Additionally, a growing body of evidence suggests that fully vaccinated people are less likely to have asymptomatic infection and potentially less likely to transmit SARS-CoV-2 to others. However, further investigation is ongoing and includes gathering evidence on how long vaccine protection lasts and the efficacy of the vaccines against emerging SARS-CoV-2 variants.

The risks of SARS-CoV-2 infection in fully vaccinated people cannot be completely eliminated as long as there is continued community transmission of the virus. Vaccinated people could potentially still get COVID-19 and spread it to others. However, the benefits of relaxing some measures such as quarantine requirements and reducing social isolation may outweigh the residual risk of fully vaccinated people becoming ill with COVID-19 or transmitting the virus to others.

These recommendations are adapted from the following CDC guidelines: Interim Public Health Recommendations for Vaccinated Persons, Updated Healthcare Infection Prevention and Control Recommendations in Response to COVID-19 Vaccination, and Travel During COVID-19 (Domestic and International). These recommendations apply to COVID-19 vaccines currently authorized for emergency use by the Food and Drug Administration: Pfizer-BioNTech, Moderna, and Johnson and Johnson [J&J]/Janssen COVID-19 vaccines. These recommendations will be updated as additional information, including regarding the ability of currently authorized vaccines to protect against infection with novel variants and the effectiveness of additional authorized vaccines, becomes available.

Definition of Fully Vaccinated

A person is considered fully vaccinated >2 weeks following the receipt* of:

  • the second dose in a 2-dose series (Pfizer-BioNTech or Moderna)
  • one dose of a single-dose vaccine (Johnson and Johnson/Janssen)

* Considerations for applying this guidance to vaccines that are not FDA-authorized include whether the vaccine product has received emergency approval from the World Health Organization or authorization from a national regulatory agency.

Persons who are not fully vaccinated must continue to quarantine after close contact to a confirmed COVID-19 case. See LAC DPH Quarantine Guidelines.

Recommendations
Close contacts to a confirmed COVID-19 case (general public)
  • Fully vaccinated persons do not need to quarantine nor test as long as they are asymptomatic
  • They must monitor their health for 14 days after the last contact with the infected person. If they develop symptoms consistent with possible COVID-19, they should be instructed to self-isolate pending clinical evaluation and SARS-CoV-2 testing, if indicated.

Exceptions: inpatients and residents in healthcare settings; residents of high-risk residential congregate settings.

Inpatients and residents in healthcare settings
  • Fully vaccinated inpatients and residents in healthcare settings who are close contacts to a person with laboratory-confirmed COVID-19 should continue to follow quarantine guidance.
  • Healthcare facilities should continue to use appropriate transmission-based precautions when caring for exposed inpatients or outpatients, regardless of vaccination status.

Per CDC, this recommendation for continued quarantine of fully vaccinated inpatients/residents in healthcare settings is due to limited information about vaccine effectiveness in this population, the higher risk of severe disease and death, and challenges with physical distancing in healthcare settings.

Note: healthcare facilities may consider waiving quarantine for fully vaccinated patients and residents as a strategy to address critical issues (e.g., lack of space, staff, or PPE to safely care for exposed patients or residents) when other options are unsuccessful or unavailable. These decisions should be made infection control experts.

Residents of high-risk residential congregate settings
  • Fully vaccinated residents of non-healthcare residential congregate settings (e.g., shelters, correctional and detention facilities, group homes) should continue to follow quarantine and testing recommendations following close contact with a person with laboratory-confirmed COVID-19.

Per CDC, this recommendation for continued quarantine of fully vaccinated residents is because residential congregate settings may face high turnover of residents, a higher risk of transmission, and challenges in maintaining recommended physical distancing.

Exceptions to quarantine in these settings may be made for specific situations such as family visitation for juveniles and out-to-court travel.

Refer to setting-specific guidelines or protocols for more information.

Workers in non-healthcare settings (including those who work in congregate settings and high-density workplaces)
  • Fully vaccinated asymptomatic workers in non-healthcare settings do not need to be restricted from work if they are close contacts to a confirmed COVID-19 case.
  • They must continue to follow all workplace setting specific protocols.
Healthcare workers with higher-risk exposures

* The CDC suggests that healthcare facilities consider continuing work restrictions for fully vaccinated HCP after higher risk exposures if they have an underlying immunocompromising condition (e.g., organ transplant, cancer treatment). The CDC rationale is that the condition which might impact the level of protection provided by the COVID-19 vaccine. However, data on which immunocompromising conditions might affect response to the COVID-19 vaccine and the magnitude of risk are not available.

Returning Travelers
  • Fully vaccinated persons entering LA County from outside of California do not need to quarantine nor test* as long as they are asymptomatic.
  • They must self-monitor for COVID-19 symptoms for 14 days upon return to Los Angeles County. If they develop symptoms consistent with possible COVID-19, they must self-isolate pending clinical evaluation and SARS-CoV-2 testing.

*The CDC recommends that international travelers, including those that are fully vaccinated, get a viral test 3-5 days post travel.

Refer to LAC DPH Travel Advisory and Guidance for details.



Adobe Reader

Note: PDF documents on this site were created using Adobe Acrobat 5.0 or later. Document functionality may be reduced if you are using an earlier version (4.x or less). Get the latest version of Adobe Acrobat.

  • Home  |
  • Careers  |
  • DPH Programs  |
  • Email: Webmaster  |
  • Notice of Privacy Practices | 
  • Website Privacy Policy  |
  • Accessibility  |
  • Disclaimer  |
  • Employee


  • Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.

    Los Angeles County Seal: Enriching lives through effective and caring services