Face-masks save us from SARS-CoV-2 transmission

  title={Face-masks save us from SARS-CoV-2 transmission},
  author={Gholamhossein Bagheri and Birte Thiede and Bardia Hejazi and Oliver Schlenczek and Eberhard Bodenschatz},
We present results on the infection risk from SARS-CoV-2 under different scenarios based on measured particle size-dependent mask penetration, measured total inward leakage, measured human aerosol emission for sizes from 10nm to 1mm, and re-hydration on inhalation. Well-mixed room models significantly underestimate the risk of infection for short and direct exposure. To this end, we estimate the upper bound for infection risk with the susceptible in the infectious exhalation cloud or wearing… 

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