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Choosing and wearing face masks: Updated guidance on what you need to know - Dal News - Dalhousie University
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SFDPH on X: "Still seeing a lot of these masks out there, it's confusing, because they are called N95- but the ones with the **valves** or openings on the front are NOT
Special Report: The Mask Middlemen - How pop-up brokers seek big paydays in a frenzied market | Reuters
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Engineers design a reusable, silicone rubber face mask | MIT News | Massachusetts Institute of Technology
N95 Respirators (HEPA or High-Efficiency-Particulate-Air Filter Respirators) as Personal Protective Equipment (PPE) | Iowa Head and Neck Protocols
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Materials | Free Full-Text | Prolonged Use of Surgical Masks and Respirators Affects the Protection and Comfort for Healthcare Workers
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