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Messaging on the importance of wearing a mask during the pandemic has at times been confusing.
Universal mask use can significantly reduce virus transmission in communities.
Masks are not perfect barriers to transmission, and should be combined with other preventative measures such as social distancing and contact tracing.
The COVID-19 pandemic has reshaped life as we know it. Many of us are staying home, avoiding people on the street and changing daily habits, like going to school or work, in ways we never imagined.
While we are changing old behaviours, there are new routines we need to adopt. First and foremost is the habit of wearing a mask or face covering whenever we are in a public space.
Based on our prior work in outbreaks of infectious diseases, we know that clear, consistent messages about what people can do to protect themselves and their community are critical. By that measure, the messaging on masks has been confusing.
Early in the pandemic, the general public was told not to wear masks. This was driven by the longstanding recognition that standard surgical masks (also called medical masks) are insufficient to protect the wearer from many respiratory pathogens, as well as the concern about diverting limited supplies from healthcare settings.
Science is the pursuit of knowledge and understanding, and it inevitably changes the way we see the world. Thanks to the tireless efforts of scientists everywhere, we have compressed years of research on the COVID-19 virus into months. This has led to a rapid evolution of policies and recommendations, and not surprisingly some skepticism about the advice of experts.
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