Do you need to wear a face mask outside?


Face masks have become part of our new normal over the past year both indoors and outdoors. While they’re highly recommended inside heavily populated areas like supermarkets/grocery stores and public transport, there’s not much guidance when it comes to outside.

According to Monica Gandhi, MD, MPH, the risk of catching COVID-19 outside is quite low.

“The risk of outside transmission is very low because viral particles disperse effectively in the outside air. A study in Wuhan, China, which involved careful contact tracing, discovered that just one of 7,324 infection events investigated was linked to outdoor transmission. In a recent analysis of over 232,000 infections in Ireland, only one case of COVID-19 in every thousand was traced to outdoor transmission. And a scoping review from the University of Canterbury concluded that outdoor transmission was rare, citing the opportunity costs of not encouraging the public to congregate outdoors. Overall, transmission is around 5000 times less likely to happen outside than inside.” (Posted April 27, 2021)

Monica Gandhi, MD, MPH
Infectious Diseases doctor and Professor of Medicine, University of California, San Francisco

… so, does that mean that we ditch our face masks and get some fresh air? With the vaccination programmes across the world coming along more efficiently and effectively we’re edging closer and closer to that point.

However, until it’s fully safe to do otherwise, we should all continue to maintain social distancing when around people who aren’t in our households, support bubbles or friendship groups.


The quote is taken from Sciline’s ‘Quotes From Experts‘.

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