ARCHIVED WEBPAGE: This web page is available for historical purposes. CDC is no longer updating this web page and it may not reflect CDC's current COVID-19 guidance. For the latest information, visit CDC's COVID-19 home page.

Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
To maximize protection from the Delta variant and prevent possibly spreading it to others, get vaccinated as soon as you can and wear a mask indoors in public if you are in an area of substantial or high transmission.
UPDATE
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.
UPDATE
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.
UPDATE
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.

Implementing Safety Practices for Critical Infrastructure Workers Who May Have Had Exposure to a Person with Suspected or Confirmed COVID-19

Implementing Safety Practices for Critical Infrastructure Workers Who May Have Had Exposure to a Person with Suspected or Confirmed COVID-19

Interim Guidance

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The Occupational Safety and Health Administration (OSHA) provides resources to assist employers and workers identify COVID-19 exposure risks and help them take appropriate steps to prevent exposure and infection. See the OSHA Coronavirus Disease (COVID-19) topic pageexternal icon for the most current requirements, guidance, and tools.

Essential critical workers who have been exposed to COVID-19

Steps for workers

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To ensure continuity of operations of essential functions, CDC advises that critical infrastructure workers may be permitted to continue work following potential exposure to COVID-19, provided they remain asymptomatic and additional precautions are implemented to protect them and the community.

A potential exposure means being a household contact or having close contact within 6 feet of an individual with confirmed or suspected COVID-19. The timeframe for having contact with an individual includes the period of time of 48 hours before the individual became symptomatic.

Critical Infrastructure workers who have had an exposure but remain asymptomatic should adhere to the following practices prior to and during their work shift:

  • Pre-Screen: Employers should measure the employee’s temperature and assess symptoms prior to them starting work. Ideally, temperature checks should happen before the individual enters the facility.
  • Regular Monitoring: As long as the employee doesn’t have a fever or symptoms, they should self-monitor under the supervision of their employer’s occupational health program.
  • Wear a Mask: The employee should wear a face mask at all times while in the workplace for 14 days after last exposure. Employers can issue facemasks or can approve employees’ supplied cloth face coverings in the event of shortages.
  • Social Distance: The employee should maintain 6 feet and practice social distancing as work duties permit in the workplace.
  • Disinfect and Clean work spaces: Clean and disinfect all areas such as offices, bathrooms, common areas, shared electronic equipment routinely.

If the employee becomes sick during the day, they should be sent home immediately. Surfaces in their workspace should be cleaned and disinfected. Information on persons who had contact with the ill employee during the time the employee had symptoms and 2 days prior to symptoms should be compiled. Others at the facility with close contact within 6 feet of the employee during this time would be considered exposed.

Employers should implement the recommendations in the Interim Guidance for Businesses and Employers to Plan and Respond to Coronavirus Disease 2019 to help prevent and slow the spread of COVID-19in the workplace. Additional information about identifying critical infrastructure during COVID-19 can be found on the DHS CISA websiteexternal icon or the CDC’s specific First Responder Guidance page.

INTERIM GUIDANCE

This interim guidance pertains to critical infrastructure workers, including personnel in 16 different sectorsexternal icon.

ADDITIONAL CONSIDERATIONS
  • Employees should not share headsets or other objects that are near mouth or nose.
  • Employers should increase the frequency of cleaning commonly touched surfaces.
  • Employees and employers should consider pilot testing the use of face masks to ensure they do not interfere with work assignments.
  • Employers should work with facility maintenance staff to increase air exchanges in room.
  • Employees should physically distance when they take breaks together. Stagger breaks and don’t congregate in the break room, and don’t share food or utensils.

Do

  • Take your temperature before work.
  • Wear a face mask at all times.
  • Practice social distancing in the workplace as work duties permit.

Don’t

  • Stay at work if you become sick.
  • Share headsets or objects used near face.
  • Congregate in the break room or other crowded places.

Steps for employers

Do

  • Take employee’s temperature and assess symptoms prior to their starting work.
  • If an employee becomes sick during the day, send them home immediately.
  • Test the use of face masks to ensure they do not interfere with workflow.
  • Increase air exchange in the building.
  • Increase the frequency of cleaning commonly touched surfaces.
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Protect Your Health This Flu Season

Essential workers: protect yourself from flu this fall and winter with a flu vaccine. While getting a flu vaccine will not protect against COVID-19, it can protect you from becoming sick with flu and needing medical care. Flu is another serious respiratory illness that can cause missed work, hospitalizations, and, in some cases, even death. The combination of flu and COVID-19 could overwhelm healthcare settings.