@OldGuyWalkin @3coach_cheer @MichelleBrodeu2 @bdzbdz @JoyAnnReid @DeniseWinecey 17  N Shimasaki, A Okaue, et al. Comparison of the filter efficiency of medical nonwoven fabrics against three different microbe aerosols. Biocontrol Sci.  2018; 23(2). 61-69. https://t.co/GNm5wnslUg