Covid Mask Pattern

A growing number of experts — medical doctors and virologists among them — say that a homemade mask, even a bandanna, might provide protection from both transmitting and getting the coronavirus. And there is some evidence to validate this. A 2013 study published in the journal Disaster Medicine and Public Health Preparedness found that well-fitting homemade masks made of cotton T-shirts provide some protection from droplet transmission, the method by which the coronavirus is spread. Another study found that mask use But because there is little research to indicate how well or what homemade masks work, there is no consensus among experts on the best design, and the scientists we spoke to were reluctant to endorse anyone homemade mask pattern.
“That would be dangerous because there’s no evidence pointing towards one type,” said Raina MacIntyre, an epidemiologist and doctor at the University of New South Wales in Sydney, who has done extensive research on the usefulness of masks. “These are all just common-sense approaches people are trying.”
. When selecting material, a trade-off must be made between filtration efficiency and breathability. Vacuum bags are highly effective filters, according to a document put out by the Stanford Anesthetics Informatics and Media Lab, but may not be a good choice because of the effort required to breathe through them. Paper towels and wet wipes are too porous and are of little use.

Many DIY mask tutorials, including those from medical centers across the nation, recommend using cotton and cotton blends to make masks. MacIntyre’s concern with cloth is that it retains moisture and provides an ideal breeding ground for bacteria. In a 2015 study in BMJ Open, she and her colleagues found that hospital health workers in Vietnam who wore cloth masks fared worse than
workers in the control group, some of whom wore no mask at all.

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