Corona Datenspende App

At the beginning of April 2020, we launched the official Corona Datenspende App. Since then, more than 530.000 German inhabitants have decided to donate their fitness tracker data. This is the biggest data donation project worldwide. We also calculate daily fever detections by regions and update the live fever monitor.

COVID-19 mobility monitor

We look at current pandemic mobility patterns and analyse the germanwide mobility based on anonymized mobile phone data. Our automated daily results are shown on the live monitor.


Fast prototyping of epidemiological models based on reaction equations. Analyze the ODEs analytically or numerically, or run/animate stochastic simulations on networks/well-mixed systems. Simple compartmental models of infectious diseases are useful to investigate effects of certain processes on disease dissemination. Using pen and paper, quickly adding/removing compartments and transition processes is easy, yet the analytical and numerical analysis or stochastic simulations can be tedious to set up and debug—especially when the model changes (even slightly).

COVID-19 - Event Horizon

The **Covid-19 Event Horizon Project** was inititated during the onset of the pandemic in the spring of 2020 when the pandemic was predominantly unfolding in mainland China. The project had two independent elements, each containing a predictive model. One model assessed the import risk of SARS-CoV-2 in different countries based on the global air-transportation network. The second dynamical model (SIRX) assessed the contaiment measures on the dynamics of the time course of the pandemic.


Simple and interactive network visualization in Python. Network visualization is an indispensable tool for exploring and communicating patterns in complex systems. Netwulf offers an ultra-simple API for reproducible interactive visualization of networks directly from a Python prompt or Jupyter notebook. As a research tool, its purpose is to allow hassle-free quick interactive layouting/styling for communication purposes.

Complexity Explorables

This project is designed for people interested in complex systems and complex dynamical processes. Complexity Explorables hosts different collections of interactive illustrations of models for complex systems in physics, mathematics, biology, chemistry, social sciences, neuroscience, epidemiology, network science and ecology. Topics include pattern formation, synchronization, critical phenomena, chaotic dynamics, evolutionary dynamics, fractals, collective behavior, reaction-diffusion systems and more.


VacMap is an interactive visualization of the vaccination status in Germany. VacMap conveys a qualitative and quantitative representation of the vaccination coverage at the regional resolution.


The aim of the project is to research which types of ticks are climate-related possibly new and which pathogens they carry. New Tick species behave differently than native ticks and can be burdened with previously unknown pathogens and potentially affect them Transfer people. The aim is to develop a structure for this pilot and citizens in a Citizen Science project motivate them to collect ticks and make them available to the RKI.