A German children's charity got laboratory tests done on one of the masks typically sold in shops, after it had been worn by a child in school for 8 (!) hours:
Result: 82 bacterial colonies & 4 mould (fungoid) colonies.
#microbiology #hygiene #PublicHealth #COVID19UK
Result: 82 bacterial colonies & 4 mould (fungoid) colonies.
#microbiology #hygiene #PublicHealth #COVID19UK