Wearing two masks will provide more protection against COVID-19, Boise doctor says - KTVB.com

“Just to give you some flavor, a regular double layer fabric mask probably protects about 70% of the time or protects against 70% of the virus,” said Dr.

An average surgical mask provides roughly 80% protection from the virus, according to McGeorge.

A surgical mask worn underneath a fabric mask, however, will provide roughly 90% protection.

"This provides additional protection against the virus and that additional mask actually helps your first mask fit more snuggly,” she said.

Some publications describe KF-94 masks as a mix between an N-95 mask and a cloth mask.