====== Two metres or one: what is the evidence for physical distancing in covid-19? ======

Jones NR, Qureshi ZU, Temple RJ, Larwood JP, Greenhalgh T, Bourouiba L, et al. //Two metres or one: what is the evidence for physical distancing in covid-19?// BMJ 2020; 370 :m322. (2020-08-25). https://doi.org/10.1136/bmj.m3223

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**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  * Current rules on safe physical distancing are based on outdated science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
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