Universiteit Leiden

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Precautionary measures

Leiden University always follows the health advice of the National Institute for Public Health and the Environment (RIVM) and the travel advice of the Ministry of Foreign Affairs.

Together, we’ll get coronavirus under control. Follow the basic measures listed below to avoid contracting or spreading the virus:

  • Wash your hands regularly with soap and water.
  • Sneeze or cough into your elbow or cover your mouth and nose with a tissue (not your hands). Dispose of tissues immediately and wash your hands.
  • Use an alcohol-based hand sanitiser if soap and water are not available.
  • Do the Corona Check before coming to the University.
  • Follow the measures and rules in our Campus Protocol
  • If you experience cold-like symptoms, coughing, shortness of breath and/or an elevated temperature or fever: stay at home and get tested for the coronavirus. Call 0800-1202 for an appointment.
  • As a preventive measure, take a self-test twice a week. Students and staff at our university can order self-tests free of charge via Zelftestonderwijs.nl. Furthermore, we encourage our students and staff to get vaccinated. 

What to do if you feel sick?

If you have any coronavirus symptoms, call 0800-1202 for to book a test. As of 1 December 2020, you can also get a test if you may have been infected but do not have any symptoms. For more information on testing see Rijsoverheid.nl.

Call your GP if you are experiencing severe shortness of breath or have a high fever, or if you are worried. If you do not have a GP, you can contact the local branch of the Municipal Public Health Service (GGD).

  • For Leiden, this is GGD Hollands Midden at 088 308 30 00.
  • For The Hague, this is GGD Haaglanden at 088 355 01 00.

Once you have been tested, stay home until you get the results. If you also have a fever or shortness of breath, the other people in your household must also stay home until the results of the test are known. Do your household members also experience any symptoms? Then they can get tested too.

If you have cold symptoms or any other symptoms of Covid but test negative, be considerate of those around  you and stay at home until the worst symptoms are over.

More information on the testing procedure can be found at the RIVM website


All teaching areas at the University are ventilated in line with the requirements of the RIVM and the building regulations. In almost all teaching areas this is managed centrally via mechanical ventilation which is switched on early in the morning.  The Pieter de la Court building is the only area where  there are still a number of older lecture rooms without mechanical ventilation. These areas make use of natural ventilation: the windows in the rooms are opened in the morning (this is indicated by stickers on the windows). This measure also meets the RIVM ventilation requirements. 

Not all work areas and meeting rooms have mechanical ventilation, particularly in the older buildings.  It is important in these areas to ensure adequate ventilation by opening the windows. It is in any event good to open the windows (even if for a short while) wherever this is possible. For example between lectures or meetings. If you have any questions about the ventilation in a specific area, please contact the Service Desk in the relevant location.

It is well known that ventilation is very important in combatting the virus, particularly in closed areas where a lot of people come together. Ensuring that our buildings are well ventilated is one of our continuing priorities. The ventilation and air-conditioning systems are connected to automatic fault detectors. 

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