Double Masking, N95s, and the Latest Mask Guidance 08:45

Masks are crucial, but not all of them are created equal. The N95 respirator mask has been the gold standard from the beginning, and our need for its efficacy is only becoming clearer. CNN Chief Medical Correspondent Dr. Sanjay Gupta talks about the latest guidance on mask wearing, and how to upgrade the masks you may already have.

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