Abstract
The use of respiratory protective equipment (RPE) has been recognized as an effective measure to mitigate droplet and airborne transmission of SARS-CoV-2. Although there are various types of RPE available, different RPEs serve different purposes and offer various levels of protection against aerosols. Additionally, recent evidence highlights the role of good fit in ensuring the effectiveness of RPEs. Some modified procedures can enhance the effectiveness of surgical masks by improving fit. In the age of SARS-CoV-2, there is an urgent need for knowledge about RPEs. The correct selection and use of RPEs are of pivotal importance for breaking the transmission chain of SARS-CoV-2.
Highlights
Recent converging evidence has shown that SARS-CoV-2 is predominantly transmitted via non-contact transmission modes, including droplet and airborne transmissions (Greenhalgh et al, 2021; Leung, 2021)
Recent laboratory-based experiments have shown that both methods could substantially reduce the risk of exposure to airborne particles when compared to the regular-used surgical mask alone (Mueller et al, 2020; Clapp et al, 2021; Sankhyan et al, 2021)
For people who cannot find a proper fit of FFR or has a low tolerance for wearing FFR, a powered air-purifying respirator (PAPR) is an alternative to provide respiratory protection (Licina et al, 2020)
Summary
Loose-fitting and disposable devices, are the most-used type of RPEs in public during the pandemic (Feng et al, 2020). The effectiveness of these masks in reducing airborne particle exposure is limited and varies between individuals, mainly depending on how well the fit of the “loosefitting” surgical mask is. Milton et al (2013) examined the effect of wearing surgical masks on the reduction of influenza aerosol transmission.
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