Part 4/7:
A crucial study from 2015, which evaluated the efficacy of cloth masks in healthcare settings in Hanoi, Vietnam, indicated that those using cloth masks experienced higher infection rates compared to their counterparts using medical masks. The study highlighted concerning statistics regarding the penetration of particles through cloth masks, leading to recommendations against their usage in professional healthcare scenarios.
Similarly, the World Health Organization (WHO) has stated that while there may be some benefits from wearing medical masks in specific contexts, there is currently no robust evidence supporting the universal masking of healthy individuals to prevent respiratory virus transmissions.