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Surgical masks as good as respirators for flu and respiratory virus protection: Newsroom - UT Southwestern, Dallas, TX
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3 Layer Cloth Face Mask with Filter without Valve, 2 Carbon Filters, Reusable Washable, Easy to Breathe, Nose Wire & Adjustable Straps: Amazon.com: Tools & Home Improvement
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Multi-Year Study Compares Surgical Masks to Respirators for Flu and Respiratory Virus Protection | Children's Hospital Colorado
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Medline Introduces Nation's First U.S. Antiviral Face Mask that Inactivates Flu Viruses | Medline Industries, Inc.
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Kids Disposable Mask Lovely Cartoon Car Mask KF94 Masks For Children Boys Girls Disposable Face Mask Face Protective Mask Breathable 50PCS : Amazon.in: Toys & Games
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Avoid crowds, wear a mask and isolate: how Japan's coronavirus response echoes Spanish flu guidelines | South China Morning Post
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