Analysis reveals rigid physical distancing rules oversimplify viral transmission in respiratory epidemics, suggesting guidelines should reflect contextual environmental risks.
Key Points
Examine the scientific rationale supporting rigid one- or two-metre physical distancing mandates during the COVID-19 pandemic.
Reviewed historical infection control paradigms, fluid dynamics of respiratory emissions, and empirical data on SARS-CoV-2 spread.
Evaluated how contextual environmental variables—such as ventilation, occupant activity, and mask use—modify transmission probability.
Identified that arbitrary one- to two-metre metrics oversimplify viral dispersion by ignoring continuous airborne aerosol travel beyond traditional boundaries.
Demonstrated that transmission risk is multidimensional, varying widely based on air exchange rates, vocalization levels, and exposure duration rather than distance alone.