News24 Wire In a report released by the researchers, they stated the masks did not provide adequate protection from dangerous respiratory pathogens, including mycobacterium tuberculosis and SARS-CoV-2. Picture for illustration. Nurses at work at the Nasrec Expo Centre to house coronavirus patients, Johannesburg, 14 April 2020. Picture: Twitter / SABC A study conducted on 36 masks, from 12 KN95 brands, by a team of medical experts from the University of Cape Town found none of them met stipulated safety requirements. Eight of the brands had identifiable manufacturer details, only one was on the National Institute for Occupational Safety and Health (NIOSH) approved list, and the mask type and manufacturing details were printed on only two of the 12 brands as per NIOSH and EU regulatory requirements.