N95 Filtering Facepiece Respirators Remain Effective After Extensive Reuse During the COVID-19 Pandemic

  1. Valeria Fabre
  2. Sara E. Cosgrove
  3. Yea-Jen Hsu
  4. George Jones
  5. Taylor Helsel
  6. James Bukowski
  7. Mark Sobota
  8. Anna C. Sick-Samuels
  9. Aaron M. Milstone
  10. Lisa L. Maragakis
  11. Clare Rock
  12. for the Centers for Disease Control and Prevention Epicenters Program
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Abstract

In a cross-sectional evaluation of healthcare worker reuse of their own 3M N95 respirators, 83% (76/92) passed the seal check and the fit-test after a median of 40 repeated donnings. The user seal-check had 31% sensitivity to detect N95 respirator failure but 100% specificity.

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