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Complex Contagion

Typically, investigations of contagion processes focus on the spread of a single infectious disease in a host population. Generically, however, different infectious diseases interact. In this project we investigate a system of cooperative coinfections in which one disease increases the susceptibility towards infection by another and show that this can dramatically change the nature of disease dynamics in a population…. Read More.

Contagion Dynamics in Online Petitions

The internet and today’s online social media culture provide various possibilities for citizens to express their opinion, political viewpoint and offers new means of participation to individuals. In this project we collaborate with the online petition platform and analyse the dynamics of thousands of online petitions…Read more

Resource allocation during emerging diseases

The allocation of resources, e.g. trained personnel and medical facilities as a measure of epidemic containment of emerging and recurrent diseases is an important component in international public health policy. However, because outbreaks affect different countries in different ways. In this project we combine network and game theory to address optimal resource allocation in a network of interdependent countries….Read more.

2014 Ebola Outbreak: Worldwide Air-Transportation, Relative Import Risk and Most Probable Spreading Routes

In order to better understand the various aspects of the current Ebola situation and the complexity of potential spreading pathways of risk throughout the global air-transportation network, we devised an interactive website that illustrates the most probable spreading pathways and provides risk information for different nodes in the network ......Read more.

The hidden geometry of complex, network driven contation phenomena

We live in a globally connected world. More than 3 billion passengers travel each year on the worldwide air-transportation network and cover trillions of miles of travel. There is no scale to modern mobility. Our global connectivity has reshaped the way that spreading phenomena evolve on the networks that connect us. The complexity of modern mobility translates.....Read more.

The structure of borders in a small world

Large-scale communities and their geographical boundaries are key determinants of various human-mediated, spatially-extended, dynamical phenomena. The geographic spread of emergent human infectious diseases such as SARS (severe acute respiratory system) and human influenza A are prime examples. However, the quantitative impact of large scale community structures and their boundaries is difficult to assess. In this project .... Read more.

The Scaling Laws of Human Travel

The goal of this project was the assessment of the statistical properties of human traffic on length scales of a few to a few thousand kilometers. A very simple question that initially motivated us was “What is the probability of a human being travelling a certain distance in a short period of time?” .....Read more.
Robert Koch - Institute & Institute for Theoretical Biology, Humboldt University, Berlin