2020
DOI: 10.1590/1517-869220202604esp001 View full text |Buy / Rent full text
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Abstract: A mask is a simple device yet it provides high levels of protection. As the virus affects mainly the respiratory tract – the nose, mouth, and lungs - it is highly contagious when people sneeze or cough, or exchange respiratory droplets with other people. This exchange is also promoted when a person is performing physical exercise. Although a mask provides some protection, it does not eliminate the need for social distancing. Around 25% of people infected with the new coronavirus may show no symptoms, yet still… Show more

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