The head of the US Centers for Disease Control and Prevention (CDC), Rochelle Walensky, advised Americans to wear a double face mask to protect against coronavirus. Her words are broadcast by the Fox23 TV channel.
According to her, the effectiveness of mask protection is facilitated by a wire for the nose, tying straps on the ears, as well as a cloth mask over a medical or disposable.
According to a study by an American regulator, the double mask was able to trap 92.5 percent of the particles that were released when simulating a cough. At the same time, the medical mask alone blocked only about 42 percent of the particles.
/Media reports.