Two metres or one: what is the evidence for physical distancing in covid-19? | The BMJ
▻https://www.bmj.com/content/370/bmj.m3223
Current rules on safe physical distancing are based on outdated science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
