CLEAN : Face masks become ubiquitous in Hong Kong

The video discusses correction surfaces and their assessment in environments with biological, radiation, or chemical hazards. It highlights public health concerns, especially in crowded areas like Hong Kong, where identifying infectious sources is challenging. The role of respirators in protecting users and patients is explained, emphasizing their importance in healthcare settings. Personal experiences with mask usage and the challenges of changing them frequently are shared. The video also touches on the global availability of masks, with a specific example from Brazil, highlighting the high costs and distribution issues.

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