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All coronavirus updates published in August 2020.

Update 25 August: New Campus Protocol adopted

The University’s new Campus Protocol enters into force on 31 August. This lists the rules and regulations for studying and working at Leiden University. From the start of the new academic year, we will be able to provide a limited amount of on-campus teaching once again. With more students and staff in our buildings, it is important that everyone is fully aware of who may come to the University and what the rules of conduct are.

Update 21 August: Associations need permission for introduction and recruitment activities

If you are planning an activity to recruit or introduce new members to a study, student or sport association, you will first need permission from the Security Region* and in some instances the University too. This is because of coronavirus. Read more in this announcement

Update 19 August: Quarantine period reduced to ten days

In line with the government measures announced on 18 August, Leiden University is also reducing its quarantine period to ten days. Students and staff who have recently returned or arrived from a country or region with a red or orange travel advisory (which includes an advised period of quarantine) may not come to the University for ten days. 

For the latest travel advisories, see nederlandwereldwijd.nl.

Update 18 August: Preparations for the new academic year: campus protocol and ventilation

Campus protocol

The new 2020-2021 academic year will begin on 31 August. Fortunately, we will be able to resume a limited amount of teaching in our buildings. This means that many students, lecturers and other staff members will once again be able to come to the University. In anticipation of this, adaptations have been made to our buildings over the past months, including fitting sneeze screens, creating one-way systems, posting instructions at lifts and staircases, determining the maximum number of people per room and providing extra options for hand disinfection. If you come to one of our buildings, please follow the instructions.

We are also working on a campus protocol that briefly explains all of our guidelines on work and study at the University. The protocol is being discussed this week and will be published on 25 August. In the run-up to and at the start of the new academic year, we will inform our students and staff in various ways of the rules that apply.


If you have recently travelled abroad, check whether you will have to quarantine. Please note: University policy is stricter than government policy. If the government advises quarantining on your return from a specific country or area, students and staff may not come to the University. 

In principle, the government advises quarantining on your return from countries with a red or orange travel advisory because of corona. The latest travel advisories can be found on nederlandwereldwijd.nl. Here you will see whether quarantine is advised. If the government does advise quarantining, you may not come to the University for 14 days.


All of our teaching rooms are fitted with a mechanical ventilation system. The ventilation is good in the spaces that have such a system. These systems are now starting one hour earlier and stopping one hour later than usual. They do not recirculate air.  All the ventilation systems are running above capacity as the corona measures mean fewer people are present in our buildings and rooms. Some workspaces and meeting rooms do not have mechanical ventilation systems. These rooms should be ventilated by opening windows (if at all possible).

Do not use small air-conditioning units or fans if more than one person is working in the room. Small air-conditioning units that are used to cool a single room usually cool the air and blow it back into the same room. Fans also recirculate air within a room. You can use them in front of an open window to improve the circulation of fresh air in the room, but do make sure that this fresh air is not being blown past one person towards another.

Update 7 August: Introduction weeks to go ahead with restrictions, but no in-person introductions to student associations

On Thursday 6 August, the government announced measures relating to the introduction weeks for universities and student associations. These can go ahead under certain conditions. For the students of Leiden University and Leiden University of Applied Sciences this means the following:

The EL CID, HOP and OWL introduction weeks can go ahead. Very careful preparation has gone into these programmes in recent months so that they already take into account all the necessary measures. Intensive coordination has also taken place with the local councils and the Municipal Public Health Service. As a result, programmes have been devised that include an online component and in all three weeks an in-person component of at least one day. For this part of the programme students will come to Leiden or The Hague in small groups to meet one another, get to know the city and their programme and find out more about student life. These days will not have an evening programme and all the activities will be arranged so that the 1.5-metre distance and other precautionary measures are complied with at all times. This means that the programmes for our introduction weeks already meet the restrictions set by the government.

The in-person introduction to the student associations cannot go ahead. The student associations will each inform their own members and aspiring members. Obviously, the university is in close contact with the student associations.

We strongly urge our students, both the new first-year students and our current bachelor’s and master’s students, to comply with the corona measures, to refrain from organising activities outside the official programme and to limit their social contacts. This will help reduce the risk of a further spread of the virus.

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