Two metres or one: what is the evidence for physical distancing in covid-19? | The BMJ
Key messages: Current rules on safe physical distancing are based on outdated science Distribution of viral particles is affected by numerous factors, including air flow Evidence suggests SARS-CoV-2 may travel more than 2 m through activities such as coughing and shouting Rules on distancing should reflect the multiple factors that affect risk, including ventilation, occupancy, and exposure time
(tags: epidemiology coronavirus covid-19 papers bmj social-distancing physical-distancing 2-metres aerosols)