Up to 70% of KN95 masks imported from China don’t meet filtration standards, study says

A shortage of N95 masks forced hospitals to find alternatives to protect health care workers tending COVID-19 patients. Queue the KN95 mask.

As its name advertises, the KN95 mask is meant to filter out 95% of aerosol particles. However, nonprofit patient safety organization ECRI issued a high-priority hazard alert against these masks after an analysis found that up to 70% of KN95 masks imported from China did not meet these filtration standards. 

While this sub-standard quality problem affects mostly healthcare workers – KN95 masks are also being sold to the public.