Note that these are results for aerosolized bacteria that tend to hang in the air. The new coronavirus is only spread via droplet transmission, which would make even rudimentary masks way more effective.
TL;DR of the results though: homemade mask filtered ~50-70% and surgical mask ~90-95%. Homemade mask reduced transmission into the air by ~75-80%, surgical mask by ~85%.
TL;DR of the results though: homemade mask filtered ~50-70% and surgical mask ~90-95%. Homemade mask reduced transmission into the air by ~75-80%, surgical mask by ~85%.