Edward Witten lectures to a socially distanced audience outside the birch gardens at IAS

Covid-19 Updates

September 24, 2021


The Institute campus is open for all faculty, members, staff and occasional visitors who are sponsored by a member of our community.  We continue to remain closed to the public.

The Institute requires trustees, faculty, staff, and members to provide proof of having completed a COVID-19 vaccination before gaining on-campus access to offices, libraries, seminars, meetings, meals and other resources.  Click here for details.

Fully vaccinated individuals at IAS:

  • Do need to carry an IAS ID card at all times.
  • Do need to use this link to report exposure or illness: COVID-19 Reporting Form | Forms (ias.edu)
  • Do need to stay home if sick with symptoms of COVID-19 or otherwise.
  • Do need to wear a mask indoors in public spaces other than private offices or when eating or drinking.
  • Do not need to wear a mask outdoors.
  • Please be courteous to individuals that may request the wearing of a face covering while in their presence outdoors.
  • May not need to quarantine after having close contact with someone with Covid-19, as long as they remain asymptomatic but should be tested 3-5 days after exposure.
  • Do not need to quarantine or get tested before/after domestic travel unless otherwise required by their destination.


Wearing a mask over your nose and mouth is required on planes, trains, buses and other forms of public transportation traveling into, within, or out of the United States and in U.S. transportation hubs such as airports and stations.

New Jersey’s domestic travel advisory is no longer in effect. 
At this time, the CDC still recommends delaying travel until you are fully vaccinated and that unvaccinated individuals get tested 1–3 days before their trip, 3–5 days after travel, and stay home and self-quarantine for 7 days after travel.

International Travel
The CDC recommends not traveling internationally until you are fully vaccinated. The CDC has travel restrictions to the United States from certain countries. All air passengers arriving in the United States, including U.S. citizens and fully vaccinated individuals, from a foreign country are required to have a negative  Covid-19 test result no more than 3 days before travel or documentation of recovery from COVID-19 in the past 3 months before they board a flight to the United States. After travel, the CDC recommends getting tested with a viral test 3-5 days after travel, self-monitor for COVID-19 symptoms: isolate and get tested if symptoms develop.

In addition, with specific exceptions, foreign nationals who have been in any of the following countries during the past 14 days may NOT enter the United States: India, China, Iran, countries in the European Schengen Area, the United Kingdom, the Republic of Ireland, Brazil, and South Africa. For a full list of exceptions, refer to the CDC's update on travelers prohibited from entry.


We have created a series of Return-to-Campus guides as a resource for the IAS community to help navigate returning to IAS this fall . The guides feature more in-depth information than shown on the website, and should be consulted before coming to campus. All current and future guides may be found at this link.


All adult visitors, collaborators, conference and on-campus seminar attendees and outside vendors coming to the Institute will need to provide the proof of having completed a COVID-19 vaccination in order to enter the IAS campus.  Unvaccinated individuals or those who do not provide proof will be able to participate in events with a hybrid/virtual option.  No exceptions or exemptions will be granted. 

For more information, please contact the individual you are visiting on campus or the event organizer.

For any other questions please contact the IAS Covid-19 response team at covid19response@ias.edu.