Spread model: How do infectious diseases spread?

Bild Graphic:The information graphic depicts a simplified spread model of infection diseases and describes exponential growth. In the first section, the information graphic shows a simplified model of the spread of infectious diseases. This model illustrates the spread based on the condition that each contact of an infected person with an uninfected person leads to transmission of the disease. In the second section of the graphic, the spread of the COVID-19 pandemic (March 2020) is examined more closely, and exponential growth related to pandemics is explained and illustrated based on this example.