Corona update: including 3G controls, exams and teaching in presence

Dear University Members,

With today's email we would like to inform you in detail about the nationwide changes announced in the email of January 28 with regard to 3G proofs and the resulting consequences for on-site lectures and examinations:  

  • The RKI has reduced the period of validity of the convalescent status from six to three months or 90 days.
  • For vaccinations with the Johnson&Johnson vaccine, a second vaccination with an mRNA vaccine is required for complete vaccination protection. Only after this (+14 days) is the complete vaccination status achieved.
  • Since February 1, it has been valid throughout the EU that no more than 9 monthssince the second vaccination may have passed. If the second vaccination was more than 9 months ago, there is no complete vaccination status without a booster vaccination.

Further detailed information, including exceptions, can be found in the FAQ section

If you have not yet received a booster vaccination, please make use of the offers available at many locations, some of which do not require registration (

The following applies to on-site lectures and examinations:

We ask students to find out before the next face-to-face teaching event and/or examination whether the proof is still valid, taking into account the above-mentioned requirements. If the respective 3G proof is no longer valid, it applies that until the complete vaccination status is reached for 3G controls, a negative test proof from an official agency must be presented that is not older than 24 hours.

As the official CoronaCheckApp of the RKI is not expected to be up to date by the start of the examination period on 07.02.2022, it may be necessary for teachers and KWS staff to view additional, detailed information on vaccination status in the respective app used (CoronaWarnApp/CovPassApp) for 3G checks. As usual, please have valid proof (in one of the two apps mentioned above, or in another form) and an ID document ready for the 3G check to support a smooth process. Please also be prepared that the 3G check may take a little longer than usual due to the additional checking steps described above, and therefore please arrive in good time before the check and pay attention to the information provided by the examiners.

For courses and examinations in presence, the obligation to wear an FFP2 mask still applies, and the minimum distance of 1.5 m between participants should be observed. See also the Corona website of the CAU and the framework hygiene concept.

The handout on 3G checks for controllers has been updated and can be found in the usual place in the cloud. Please also refer to the information provided by the respective deaneries.

Students with children - addition to the free attempt regulation

In anticipation of a further amendment to the Corona Higher Education Supplementary Regulations (Corona-HEVO), which is expected to come into force by the weekend, we would like to inform you that the exemption regulation for students caring for or looking after children under the age of 14 will be adapted to the current situation:

  • According to the Corona HEVO already in force, students who care for or look after children under the age of 14 and whose learning or examination situation is significantly impeded due to the closure of schools and day-care facilities will be granted a free attempt for an examination taken and not passed in the winter semester 2021/22.
  • It is expected to be added that, if learning or examination situations are more difficult due to the closure of individual groups and classes in day-care centres and schools or the obligation of the child to be segregated (isolation or quarantine), a free attempt will be granted for examinations taken and failed in the winter semester 2021/2022.
  • In the event that an examination is not passed, students can contact the relevant examination office so that a free attempt can be booked retrospectively. Appropriate proof (copy of the child's birth certificate) and a plausible justification of the above-mentioned restrictions in text form are required. 

Yours sincerely

Claudia Ricarda Meyer, Chancellor
Prof. Dr. Markus Hundt, Vice President