Reproduction number, doubling time, infections – what metrics are important

A Doctor handled a Coronavirus Test. The starmaps show the doubling times for the world and Germany

On (at least) three key figures, politicians and scientists are looking in the Coronavirus pandemic, particularly:

1) the number of new infections

Firstly, as the number of confirming infections with the Coronavirus. This increases both, according to data from the Robert Koch Institute (RKI) as well as those of the American Johns Hopkins University resistant. This is not different, because new cases daily adds, Convalescent and Deceased but will not be deducted again. Current Figures for all German districts and cities, you can find here.

2) Reproduction Number R

Antibodies, Vaccination, Therapy

When you are immune against the Coronavirus?

In addition, the so-called basic reproduction number R0 is important. It indicates how many other people an Infected person on average infects. The value is greater than 1, spreads a disease. First according to scientific estimates, the R0 value at Covid-19 according to the RKI between 2.4 and 3.3, other institutions have referred to different span widths. The value changes, scientists speak of the Effective reproduction number R. This was the RKI, according to Germany under 1, which means the number of new infections are among drops (more about this here).

This graph is the Robert Koch Institute (RKI) published in its epidemiological Bulletin of 23. April. As the chart from the 15. April also shows this Graph, the estimate of effective reproduction number R (blue curve). This provision was according to the RKI, however, until the end of March.

3) doubling time

Thirdly, there is the so-called doubling time, which is also of German Chancellor Angela Merkel as an important indicator for the evaluation of the measures was called. This is the time period in which the number of Infected doubled. The doubling time can be so good to see how strong an epidemic is progressing. In contrast to the case of numbers it is good if the values rise, because a high doubling time relieves the health system of potentially (more background and a sample calculation, see here).

Interactive graphics: doubling times in the case of Coronavirus infections

In the below bar graph, you can track the history of the development of the doubling times in Germany. By clicking in the selection menu, you can select your circle, or your city. Click on each bar to show further Details.

Or not correctly displayed the graphics? Please click here.

Interactive map: doubling times in Germany and in the world

The below maps show the doubling times for confirmed Coronavirus infection in the German circles and circle-free cities and of the world. The click in a circle or in a country shows more information, including the trend of development.

In all the cards you can in the timeline, click, the Situation on the desired day to view.

Note on data: The Germany graphics are based on data from the Robert Koch Institute, the world map on data from the Johns Hopkins University. Because both raise your Numbers differently and communicate (more on this here and here), are to be found in the data sets have different values.

Sources: RKI Covid-19-plug-in letter, “doctors blade”

All about Corona

News for the Coronavirus pandemic

Markus Söder: "To save the Lufthansa elementar&#034 is;

star travel worlds

Western Europe cruise from Hamburg with All Inclusive ab 499 Euro


The weekend hat's shown: The everyday madness WHY now–?


Glasses fog up by means of a protective mask: These tips provide a clear view

Anxiety disorder

"I’ve always tried to be in control. If that was not possible, came the Angst"

Press conference

"A life without Corona, it is first of all not geben": Söder on possible further easing

Microsoft Founder

Bill Gates praises Merkel in Corona-crisis and criticized Trump government

Isolation in L. A.

Creativity in crisis: Heidi Klum’s daughters paint the Coronavirus in a special way

"Chris Walks UK"

"The Isolation of positive sehen": A Briton is stranded due to Corona-Lockdown on uninhabited island


Italy announces loosening of the Corona-restrictions


Due to less boat traffic: the dolphins back to conquer the Bosphorus


Mask is compulsory in all States, where in case of violation, a penalty threatens for children


You fall in love in the times of the contact barrier. Since the mistaken idea of the Bus comes to you

Relaxations in Spain

Relief for parents: children may for the first time in six weeks in front of the door

Coronavirus in the United States

According to the Statement from Trump: more and more people take disinfection means to

"Fight Every Crisis"

Corona is the price we pay for the destruction of nature? A Thought Experiment


Austria will only "behutsam" for vacationers open

Corona crisis

From Italy to Australia: To other countries to loosen the Corona-restrictions


Nearly a Million Infected in the United States, 5900 Deaths in Germany: the Coronavirus spreads

Distance regulations in Tunisia

Handball referee distributes red cards for Corona violations

Talk show to the corona crisis

Laschet against Lauterbach: right-Haber-duel at "Anne Will"