The COVID-19 pandemic has reshaped life as we know it. Many of us are staying dwelling, avoiding individuals on the road and changing each day habits, like going to school or work, in methods we by no means imagined.

While we’re altering old behaviours, there are new routines we have to adopt. In the beginning is the habit of wearing a mask or face covering every time we’re in a public space.

Based mostly on our prior work in outbreaks of infectious illnesses, we all know that clear, constant messages about what folks can do to protect themselves and their group are critical. By that measure, the messaging on masks has been confusing.

Early in the pandemic, most of the people 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 restricted supplies from healthcare settings.

Science is the pursuit of knowledge and understanding, and it inevitably modifications the way we see the world. Because of the tireless efforts of scientists all over the place, we have compressed years of analysis on the COVID-19 virus into months. This has led to a speedy evolution of policies and proposals, and never surprisingly some skepticism in regards to the advice of experts.

These are among the things we’ve learned:

Masks and face coverings can prevent the wearer from transmitting the COVID-19 virus to others and may provide some protection to the wearer. Multiple studies have shown that face coverings can include droplets expelled from the wearer, which are responsible for the majority of transmission of the virus. This ‘supply management’ approach reflects a shift in thinking from a ‘medical’ perspective (will it protect the wearer?) to a ‘public health’ perspective (will it assist reduce neighborhood transmission and risk for everyone?).
Many people with COVID-19 are unaware they are carrying the virus. It’s estimated that 40% of individuals with COVID-19 are asymptomatic however probably able to transmit the virus to others. In the absence widespread screening tests, we’ve got no way of identifying many people who are silently transmitting the virus in their community.
Common mask use can significantly reduce virus transmission in the neighborhood by stopping anyone, together with those that are unwittingly carrying the virus, from transmitting it to others. Disease modeling suggests masks worn by significant portions of the inhabitants, coupled with different measures, might end in substantial reductions in case numbers and deaths.
Masks are not good barriers to transmission, however they don’t have to be excellent if they aren’t used alone. Universal masks use ought to be accompanied by other public health measures comparable to physical distancing, testing, contact tracing and restrictions on massive gatherings. Those measures aren’t good either, however when many imperfect measures are mixed at a community level, they can be very efficient at slowing transmission and reducing infections.

Masks may reduce the inequitable impact of the pandemic, notably for those who live in crowded environments the place physical distancing is tough, and for those who work in frontline roles where there is a larger risk of exposure to the virus.

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