Annual N95 respirator fit-testing: an unnecessary burden on healthcare.
Thomas C S MartinGenevieve CurtinNatasha K MartinFrancesca J TorrianiPublished in: Infection control and hospital epidemiology (2023)
US regulations mandate annual N95 mask fit testing for healthcare workers, but the optimal testing interval is unknown. In our study using data from 12,565 healthcare workers, the probability of survival free from fit-test failure after 3 years was 99.4%, suggesting that less frequent fit testing every 3 years would be safe.