CDC officials still stress the importance of ... wearing a quality mask remains the most effective way to stop the spread of COVID-19. A KN95 or N95 mask can block 95% of the particles responsible ...

N95 masks are approved by the NIOSH and meet U.S. standards. The CDC estimates that 60% of KN95 masks sold in the U.S. are fake. Standard KN95 masks are manufactured in China and satisfy standards ...

Wearing a face mask when you’re in a public setting is one of the best ways to avoid getting and spreading illnesses like ...

(Note that most people use “mask” and “respirator” interchangeably, but when the CDC and medical professionals say “respirator,” they specifically mean fitted face coverings with ...

CU Boulder employs a framework for public health and COVID-19 decision-making that follows Centers for Disease Control and Prevention (CDC) guidance. As we transition into the recovery ... we ...