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NIH Respiratory Virus Guidance

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Executive Summary

Since the pandemic began much has changed; in our knowledge of the virus, the tools at our disposal, and the reality that some level of COVID-19 within the community is likely to persist for years to come. This site, which serves as a revision to previous versions of the NIH Return to the Physical Workplace and COVID-19 Plan, lays out the principles and practices that the NIH will base its decision-making on for minimizing the risk of workplace transmission.  

This site will address each of the topics in detail, as well as provide a framework for safe return to work guidance. The site includes information on a safe return to the physical workplace, universal workplace expectations, travel and meeting guidance, testing and vaccination information, and staff wellness. Additionally, you may view the appendices for definitions, illustrations, and background information that contributed to the requirements laid out in this site.


Appendix IX of this document includes a Code of Conduct. This attestation form establishes that the employee and supervisor have discussed the expectations for working at the NIH during the COVID-19 pandemic. The Code of Conduct should be signed after the supervisor and employee review it together.

NIH Basic Principles for Return to the Physical Workplace

The basic principles that the NIH will follow are:
  • Risk Assessment. Understanding the virus and how it spreads is fundamental to understanding how to protect ourselves. The risk of exposure is determined by a number of factors, including (but not limited to) the infectious dose and transmissibility and virulence of the viral variant, the size of the space, the vaccination rates of staff, the ventilation and air filtration in buildings, the use of protective equipment, the duration of exposure, and the number of personnel present. We also consider host factors such as whether the individual is immunocompromised, has a condition that places them at high risk for a poor outcome if infected, and whether or not they live or work closely with immunocompromised or high-risk individuals. Understanding these factors allows us to make informed decisions that reduce risk to an acceptable level and limit (or eliminate) workplace transmission.
  • Vaccinations. The introduction of multiple highly effective vaccines has greatly reduced the threat of COVID-19 to NIH staff members. Maintaining near-universal vaccination rates among NIH employees and contractors is fundamental to minimizing risk of workplace transmission of the SARS-CoV-2 virus.
  • Symptom Self-monitoring and COVID-19 Testing Programs. Each of us knows our physical health better than anyone else. NIH staff experiencing any COVID-19 symptoms must stay home (or leave immediately if at work). Notify your supervisor to discuss options for leave or telework. Routine surveillance (e.g., asymptomatic) testing is also an important tool to detect asymptomatic infection and ensure safety of staff.
  • Masking. Use of surgical masks and N95 respirators prevent the spread of the SARS-CoV-2. They serve as source control, reducing the potential to infect others. N95s, and to a lesser extent surgical masks and face coverings, can also provide protection from infection if exposed to SARS-CoV-2 positive personnel.
  • Physical Distancing. Occupancy must be limited as identified in the section titled Physical Distancing AND NIH staff must maintain 6 feet of physical distancing from others whenever possible. When 6 feet of physical distancing is not possible other measures must be implemented, including minimizing time in close proximity to others, enhanced personal protective equipment (PPE), and increased screening practices. 
  • Workplace Flexibility. The greatest tool in the NIH toolbox is our adaptability to the challenges presented by the COVID-19 pandemic. Maximizing the use of telework, leave options, and other administrative controls can greatly reduce to potential for workplace exposure by minimizing contact with others that may be infected. The NIH staff has demonstrated remarkable resilience and the ability to perform exceptional science and provide the highest customer service despite being forced to remotely work for much of the past two years. Using the tools we have refined (including virtual meetings) will allow us to continue to adjust to conditions that can quickly change.
  • Applicability. This site applies to all NIH operations, at all facilities throughout the country. However, the NIH recognizes that a one-size-fits-all approach is not sustainable, and that risk assessments and local conditions may require customized solutions to the challenges of each location. Rather than prescriptive solutions, this site establishes baseline expectations. Where modifications from these baseline expectations is necessary, the changes should be thoroughly documented and supported by a risk assessment conducted by the supervisor, in consultation with the Division of Occupational Health and Safety (DOHS) and approved by the Institute/Center/Office (ICO) leadership.

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