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In response to the critical shortage of medical masks resulting from the COVID-19 pandemic, large
portions of the population are mobilizing to produce cloth masks using locally-sourced fabrics. While the
general population is being advised to wear masks to protect others from virus that may be spread from
the wearer, the efficacy of these masks as a means of protecting the wearer from airborne particles
carrying virus is also a concern, particularly as medical masks grow scarce. This issue may become more
critical if it becomes necessary for medical care workers to use similar alternative personal protective