Here is a growing list of 30+ papers that back up the efficacy of masks: https://docs.google.com/document/d/1HLrm0pqBN_5bdyysOeoOBX4pt4oFDBhsC_jpblXpNtQ/edit# h

Here is a growing list of 30+ papers that back up the efficacy of masks: https://docs.google.com/document/d/1HLrm0pqBN_5bdyysOeoOBX4pt4oFDBhsC_jpblXpNtQ/edit# https://docs.google.com/document/d/1HLrm0pqBN_5bdyysOeoOBX4p...