Masks may be more effective as a “source control” because they can prevent larger expelled droplets from evaporating into smaller droplets that can travel farther. Another factor to remember, noted ...

But when it comes to wearing these masks to accomplish what scientists call “source control,” a vent negates the entire purpose. Face masks such as those recommended by the CDC provide a small ...

Masks function very differently as personal protective equipment (PPE) versus source control. This means that nearly any kind of simple cloth mask is great for source control. The mask creates ...

The community use of masks for source control is a “public good”: something we all contribute to that eventually benefits everyone—but only if almost everyone contributes, which can be a ...

He said masks function very differently as personal protective equipment versus “source control.” "Masks are very good at blocking larger droplets and not nearly as good at blocking tiny ...

"Compelling evidence now supports the benefits of cloth face masks for both source control (to protect others) and, to a lesser extent, protection of the wearer," the report states. Other measures ...

The study tested masks as a way to control the spread of the virus from the source, i.e. the infected person, and did not test masks as protection from COVID-19 in the surrounding air.