“The purpose of masks is to keep respiratory droplets from reaching others to aid with source control. Masks with one-way valves or vents allow exhaled air to be expelled out through holes in ...

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 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 ...

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 ...

"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 ...

Cloth masks don’t provide great source control, either. The CDC is now letting people who test positive for COVID-19 stop isolating after five days and then wear a mask for five days.

Mask-wearing was soon a pandemic-control strategy worldwide ... issued by any governmental agency without a single source of data or information to support it,” he said on a podcast that ...

Then the specialized face masks were tested on 100 individuals. About half of the participants had a CKD diagnosis, and the other half (the control group) did not. The sensors detected several ...