Take careful note of the quarantine imposed by CERN
All members of personnel returning from one of the countries as mentioned in point 5. will not be allowed on CERN sites during for 10 days after the date of their return days, as of 8 October. This measure is retroactive: anyone who is already in travel quarantine should complete it up to 10 days. .
A negative test result does not exempt the persons from the CERN mandatory quarantine requirement or shorten the quarantine period.