What you should know about SARS-CoV-2 and Covid-19

In the course of the challenges posed by the coronavirus SARS-CoV-2 and Covid-19 pandemic, the scientists of the Harding Center for Risk Literacy have compiled known facts in a way they can be easily understood. The materials we provide on this page may be used free of charge.

Corona pandemic - Statistical concepts and their limits
It is still uncertain how the Covid-19 pandemic will develop. The Unstatistic of the Month in March 2020 sheds some light on the current situation, at least with regard to statistical concepts. In place of our usual unstatistic, we take the opportunity to instead explain essential statistical concepts and their limits. As most factors in the forecast of the spread of Covid-19 are subject to a high degree of uncertainty, we emphasise that the containment of new infections must take absolute priority in the current situation.

» Unstatistic March 2020


© CDC via AP

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Decision tree: Could I be infected with the corona virus?

An infection with the corona virus SARS-CoV-2 is possible even without symptoms. This simple decision tree (fast-and-frugal tree) helps to answer the question of whether you  could be infected and potentially pass on the virus.

The decision tree is based on a presentation from Zeit.de and on information from the Robert Koch Institute and the German Federal Ministry of Health.


Download the decision tree as PDF

Last Update: 26.03.2020





In the media

Selected articles:

Süddeutsche Magazin, 6.4.2020
(german) Reist man im Auto sicherer als im Zug?

Zeit-online, 31.03.2020
(german) Interview mit Gerd Gigerenzer: "Unser Leben kann so nicht weitergehen"

Zeit-online, 28.03.2020
(german) Einzelinformationen bringen einen vom Weg ab

Der Spiegel (Abo), 25.3.2020
(german) Risikoforscher über die Coronakrise: "Es ist die Zeit, mehr zu verstehen und sich weniger zu fürchten" 

Handelsblatt, 10.3.2020
(german) Risikoforscher erklärt: Das können wir gegen die Angst vor dem Coronavirus tun

SR2 Kulturradio, 16.03.2020
(german) Interview mit Mirjam Jenny: Corona und die Angst 

DW, 17.2.2020
Why coronavirus fears are disproportionate compared with other health risks


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More information

Tustworthy information can be found on the following websites:




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