Agent-based simulations for optimized prevention of the spread of SARS-CoV-2 in nursing homes

Complexity Science Hub Vienna     |     Medical University Vienna

Jana Lasser     |     |     @janalasser

slides available at


  • High mortality
  • Close living conditions in homes → easy spread
  • Balance between quality of life and safety


Use agent based simulations

in a model of an Austrian nursing home

to find the best prevention strategy.

agent states

Collaboration with Caritas to model Austrian nursing homes
floor plan and interactions

contact network


test types

agents are quarantined, the outbreak dies off eventually, without infecting all residents
→ adjust transmission risk and contact weights to reproduce outbreak data
employees were index case in 8/8 recorded outbreaks
employee index case:    R0  =  2.61 ± 1.33
resident index case:    R0  =  4.82 ± 2.01

tests per person per day

Different test technologies

Different turnover times

technical notes

  • existing stable library
  • easy to extend
  • out-of-the-box functionality