Speach on mask and sanitizer
Answers
Answer:
Yes, wearing protective masks has become a surprisingly contentious, even political issue, as we try to find the best ways to limit the spread of the novel coronavirus. In the United States, people have compared mask wearing to slavery, berated employees trying to enforce mask requirements, and in one egregious case in Michigan, a store security guard was shot to death after informing a customer that she could not enter without a mask.
Explanation:
So, let’s take the politics out here and just talk about what science tells us about the protective value of wearing masks. First of all, it’s important to note that droplets expelled from the nose and mouth appear to be the primary source for spreading Covid-19, the disease caused by the SARS-CoV-2 virus. Although the virus causes more than respiratory infections, it appears to replicate rapidly in the lungs. Recent research emphasizes the idea that even when we speak or just exhale, viral particles spread through the air and are eventually deposited on a wide range of surfaces. One study showed that the particles can remain aloft for up to 14 minutes, at least in a closed environment. More forceful exhalations can scatter viral particles to an even larger degree, and people who talk loudly have been found to exhale more particles. The U.S. Centers for Disease Control and Prevention (CDC) even reported last week that a choir practice in Washington became a super-spreader event, in part because the deep exhalations used in singing likely fanned the virus outward.
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