Intended for healthcare professionals

Letters Effectiveness of public health measures against covid-19

Effectiveness of public health measures against covid-19: ventilation has a major role

BMJ 2021; 375 doi: (Published 16 December 2021) Cite this as: BMJ 2021;375:n3050
  1. Simon Ashworth, consultant and clinical director critical care
  1. Imperial College Healthcare NHS Trust, St Mary’s Hospital, London, UK
  1. simon.ashwort1{at}

Talic and colleagues’ systematic review and meta-analysis assessed many public health measures for reducing covid-19 but did not assess the effectiveness of interventions designed to reduce the presence of virus in inspired air, such as filtration, window opening, or the installation of ventilation.1

The climate implications of some of these measures could be challenging, but they are potentially important considerations in the design of buildings, workplaces, and homes for “antiviral sustainability.” …

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