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Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, staff, students, and visitors to K-12 schools, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place.
The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. More information is available here.
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.

Public Health Guidance for Community-Related Exposure

Public Health Guidance for Community-Related Exposure
Updated Mar. 1, 2021

COVID-19 Partner Call: Vaccination Planning – What You Should Know

Dr. Brooks shared updates on CDC’s COVID-19 response, including the latest scientific information and what everyone should know about protecting themselves and others. In addition, Dr. Messonnier reviewed CDC COVID-19 Vaccination Planning and shared What You Should Know.

Summary of Changes

On December 3, 2020

  • Updated language to align with new quarantine guidance.

On November 16, 2020

  • Updated language to clarify what precautions exposed healthcare personnel should take when in the community setting.​

On October 21, 2020

  • Added links to the updated close contact definition.
  • Updated language to align with updated definition.

On June 4, 2020

  • Added exposure to people  with confirmed COVID-19 who have not had any symptoms to this Guidance.

The following guidance is provided for definitions and management of contacts of people with COVID-19. Separate guidance is available for international travelers. Healthcare personnel (HCP) should follow CDC’s Interim U.S. Guidance for Risk Assessment and Work Restrictions for Healthcare Personnel with Potential Exposure to COVID-19 regarding work restrictions if they have potential exposure to people with COVID-19. HCPs who are excluded from work due to an exposure should stay away from others in the community setting per this community guidance. While some HCPs might continue to work in the healthcare setting after an exposure, these individuals should stay away from others when in the community setting per this community guidance. See also CDC’s guidance for Implementing Safety Practices for Critical Infrastructure Workers Who May Have Had Exposure to a Person with Suspected or Confirmed COVID-19. Individuals should always follow guidance of the state and local authorities.

Public health recommendations have been updated to accommodate new scientific evidence, evolving epidemiology, and the need to simplify risk assessment. New recommendations are based on:

  • Growing evidence of transmission risk from infected people without symptoms (asymptomatic) or before the onset of recognized symptoms (presymptomatic);
  • Increased community transmission in many parts of the country;
  • A need to communicate effectively to the general public;
  • Continued focus on reducing transmission through social distancing and other personal prevention strategies.

Current guidance based on community exposure, for people exposed to people with known or suspected COVID-19 or possible COVID-19

Individual who has had close contact (within 6 feet for a total of 15 minutes or more)

Exposure to

  • Person with COVID-19 who has symptoms (in the period from 2 days before symptom onset until they meet criteria for discontinuing home isolation; can be laboratory-confirmed or a clinically compatible illness)
  • Person who has tested positive for COVID-19 (laboratory confirmed) but has not had any symptoms (in the 2 days before the date of specimen collection until they meet criteria for discontinuing home isolation).

Note: This is irrespective of whether the person with COVID-19 or the contact was wearing a mask or whether the contact was wearing respiratory personal protective equipment (PPE)

Recommended Precautions for the Public

All U.S. residents, other than those with a known risk exposure

Exposure to

  • Possible unrecognized COVID-19 exposures in U.S. communities

Recommended Precautions for the Public

1 For the purpose of this guidance, fever is defined as subjective fever (feeling feverish) or a measured temperature of 100.4°F (38°C) or higher. Note that fever may be intermittent or may not be present in some people, such as those who are elderly, immunocompromised, or taking certain fever-reducing medications (e.g., nonsteroidal anti-inflammatory drugs [NSAIDS]).