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Corona Virus – Relevant information (as of October 1, 2021) for all scientists at the Max Planck Institute for Mathematics

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During the pandemic, regulations are imposed by different sources. The German government imposes the overall rules but the governments of the individual Länder (federal states in Germany) as well as some cities have the freedom to impose regulations with regard to the particular situation of the area. Here we try to summarize the information relevant for our guests as best as possible and to keep it up to date. We assume no liability for this information and refer to the government websites for the official regulations:

NRW website (only in German), Federal Foreign Office's website, city of Bonn's website.

Regulations in Bonn / NRW / Germany

Updates, valid from October 1, 2021:

  • Elimination of the requirement to wear masks outdoors. It is still recommended to wear a mask when standing in queues, at sales stands and at outdoor events (e.g. sports or cultural events) with more than 2,500 visitors.
  • PCR test can be replaced by short-term rapid test (not self-test) that is no more than six hours old.
  • Indoor restaurants/cafés: no special distances/room dividers required anymore. However, masks are still required outside the fixed seat.
  • For large events, the absolute upper limit of 25,000 spectators does not apply. For large outdoor events, all seats can be occupied if masks are worn outside the seats.
  • Often you will read 3G or 2G when seeing what status is allowed for certain places or activities:

3G-rule = Geimpfte, Genesene, Getestete = fully vaccinated*, recovered**, tested people are allowed.

2G-rule= Geimpfte, Genesene = fully vaccinated*, recovered** are allowed.

  • 3G: indoor activities, events, sports, spas; body-related services (with the exception of medical or nursing services); visits to facilities such as hospital or nursing homes; and more.
  • Mask requirement remains in effect in certain areas, e.g. public transport; retail; public indoor areas, and more.
  • The federal government will end the offer of free citizen testing (with exceptions), effective October 11, 2021, as an immediate offer of vaccination can now be made to all citizens.

You can see the current numbers regarding Covid-19 in Bonn here.

* full vaccination protection occurs 14 days after the last vaccination shot.
** the positive test must be at least 28 days and maximum six months old

Covid Vaccination

Here you can find some information about vaccination on the homepage of the City of Bonn.

There is no more vaccination prioritization. Everyone who is registered in Germany can arrange an appointment for a vaccination at the vaccination centers, for example at the World Conference Center in Bonn (WCCB).
You can fill out a registration and then make an appointment if they are available, or make an appointment via phone 116 117 or (0800) 116 117 01.
For complete protection, depending on the vaccine, one or two vaccinations are required and at least 14 days must have passed since the last required single vaccination.

Vaccination side effects can be reported here.


All persons traveling to Germany from abroad will be required to present an official negative test result, proof of recovery or proof of complete vaccination protection (regardless of whether you arrive by plane, train or car and from where you arrive).

For the digital entry registration when entering from a high risk - or virus variant area, please register at before arriving in Germany and carry proof of registration with you upon entry.

To see in which category (no risk, high risk or virus variant area) which countries are, please see the Robert Koch Institute website.

For vaccinated people: you need a proof of a Covid-19 vaccination in German, English, French, Italian or Spanish in digital or paper form (for example Digital COVID certificate of the EU or yellow WHO vaccination certificate). The vaccination must have been carried out with a vaccine listed on the website of the Paul Ehrlich Institute. The last necessary vaccination dose must be received at least 14 days before entering Germany. For recovered persons one vaccination dose is sufficient and this vaccination does not have to be 14 days ago either.

For recovered people: you need a positive PCR test result obtained at least 28 days but not more than 6 months before entry to Germany.

For unvaccinated people: negative test result with nucleic acid amplification technique (e.g. PCR, PoC-PCR) in English, French, German, Italian or Spanish. The test must be performed no more than 72 hours prior to entry (time of swab collection).
Alternatively, a negative result of a rapid antigen test in English, French, German, Italian or Spanish. The test in case of a previous stay in a high-risk area must be done no more than 48 hours before entry. In the case of a previous stay in a virus-variant area, the test may be performed no more than 24 hours before entry.
Details on the recognition of tests are provided by the Robert Koch Institute.

Please make sure to check if these regulations apply for entering Germany from the respective country you will travel from and for your particular circumstances.

Regulations from us and the Max Planck Society

In case of absence of at least 5 days, a negative test result, a proof of complete vaccination protection or a proof of recovery must be presented on the first day back at work. Exception: fully vaccinated persons. This does not apply in case of absence due to illness or home office.

  • there is a mask obligation in the institute, except for in your office (if the distance to other people can be maintained) and during meals (only as long as it is necessary for consuming the meal) Please do not use the meal time as an excuse to sit in public areas leisurely without a mask.
  • every confirmed case of Covid-19 has to be reported to or 0228-402-255. Please also inform us if you have suspicious symptoms, so that we can quickly trace your contacts.
  • there can be no lectures or seminars running live at MPIM.
  • business travel should be avoided.
  • work from home as much as possible, keep your visits to MPIM brief
  • if you enter the institute, please disinfect your hands immediately at the dispensers on the ground floor next to the elevator or at the reception desk
  • do not stay in a small office (or one without windows) with multiple people
  • participate in virtual meetings and seminars,
  • participation in livestreams in the same room is not allowed for more than two households!
  • wash and disinfect your hands regularly,
  • keep at least a 1.5m distance,
  • ventilate the rooms regularly.

If you meet in person, we strongly encourage you to meet outside. In case you meet for a brief discussion at the institute, wear masks and meet in a wide and well-ventilated area, such as the blackboards in the tea area, lecture hall, etc.

We all hope that normal life (at MPIM and elsewhere) can resume soon.

Gerd Faltings, Dennis Gaitsgory, Peter Scholze and Peter Teichner

Further information from our staff

  • The reception and IT at MPIM will be staffed as usual.
  • The library is open and staffed Wednesdays. Please disinfect your hands when entering and leaving the library.
  • Our staff will work mostly from home but will be still available by e-mail and for urgent questions in person at MPIM on Wednesdays.
  • The daily tea will not take place until further notice.

We ask you to make responsible decisions for you and other people to help slow down the infection rate. We wish you good health and a positive mindset. We thank you for your understanding and will keep you updated about the situation. For further questions, please do not hesitate to contact us by e-mail.

Information for invited guests

You are still welcome to start your research stay at the institute as planned, but please be aware of the current entry regulations (see above).

Unfortunately, we cannot postpone your visit, since our office space is already fully booked. However, you can shorten your visit if needed. You can also choose the option to reapply through our online application system (no new recommendation letters are needed in this case).

If you have already booked an accommodation and you plan to cancel your stay, please contact the landlord immediately to cancel the rental contract (to avoid costs) and try to find a solution for both sides.

If you have not yet booked a flight or accommodation, please wait before doing so and book only at short notice. We do not know how the situation will change and can only recommend not to book anything yet. If you have booked your flight already, check this link to rebook or cancel for free.

Please be so kind and inform us about your plans by e-mail.


© MPI f. Mathematik, Bonn Impressum & Datenschutz
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