Papers about effectiveness of basic masks at https://docs.google.com/document/d/1HLrm0pqBN_5bdyysOeoOBX4pt4oFDBhsC_jpblXpNtQ/edit# https://docs.google.com/docu

Papers about effectiveness of basic masks at https://docs.google.com/document/d/1HLrm0pqBN_5bdyysOeoOBX4pt4oFDBhsC_jpblXpNtQ/edit# https://docs.google.com/document/d/1HLrm0pqBN_5bdyysOeoOBX4p... The Czech Republic story at https://docs.google.com/document/d/1EWpWmyjzM4sNBF-7jp_1Y9a-pqiRg0wakGXy7kj11RA/preview https://docs.google.com/document/d/1EWpWmyjzM4sNBF-7jp_1Y9a-... And a more in depth video from Jeremy Howard (fast.ai guy) at https://www.youtube.com/watch?v=BoDwXwZXsDI https://www.youtube.com/watch?v=BoDwXwZXsDI