How Long Can You Wear a KN95, N95, or KF94 Mask Before Replacing It? | Health

CEID Faculty Dr. Cassandra Pierre provides information on the types of respirators and how to use them.

“‘Respirators kind of fall in between the two options: You can reuse respirators (without washing in between uses), as long as you’re aware of your personal risk level, and you take care of the mask between uses,’ Cassandra M. Pierre, an infectious disease physician and medical director of public health programs at Boston Medical Center, tells Health.

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