![]() In an experiment, the CDC simulated what would happen when a person coughs when they and another person in their proximity are wearing various mask combinations. The other involves double masking by wearing a cloth mask over a medical procedure mask. One way involves knotting the ear loops of a medical mask and then tucking in and flattening any extra material so the mask fits closer to the face. ![]() 10 outlining two methods that have been studied as a way to improve the fit of medical procedure masks. The Centers for Disease Control and Prevention (CDC) released a report on Feb. “The most important thing,” Schiffres said, “is not to have a false sense of confidence in the filtration of the mask, as it can only be as good as the fit to your face allows.” “If you were to just put two surgical masks one on top of another, more of the air would actually leak around the seal as the resistance through the masks increases, and even less air would be filtered, making this double masking detrimental,” he said. “The surgical mask material itself is very good (>95 percent at 0.1 um), but in practice about 20 percent of the air will slip between the mask and the seal of the mask, so the efficiency would effectively be about 80 percent,” Schiffres said. “It is not the ability of the filter that limits performance,” he said, “but the fit to the face (how much air leaks at the face seal).” If the masks are worn in a way that compromises the fit of the masks on the face, this may allow unfiltered air to leak through gaps.įor example, wearing two surgical masks won’t be better than one, Schiffres said. Is double masking a good idea for you? When and how should you go about doing it?īinghamton University mechanical engineering assistant professor Scott Schiffres, PhD, who’s been working on testing masks since the COVID-19 pandemic began, said that increasing protection isn’t just about adding more layers of filtration. In addition, high profile figures like transportation secretary Pete Buttigieg and his husband, Chasten, have been spotted wearing double masks in recent weeks. Anthony Fauci, who is the chief medical adviser on COVID-19 for the president, said that double masking is a move that “just makes common sense” and is “likely” to provide more protection against the transmission of COVID-19. On a recent appearance on the “Today” show, Dr. Visit our coronavirus hub and follow our live updates page for the most recent information on the COVID-19 pandemic. Double masking is most helpful when there are concerns about source control.Īll data and statistics are based on publicly available data at the time of publication.In theory, it’ll help reduce the spread of COVID-19 by filtering more particles.Anthony Fauci has said that double masking “just makes common sense.” Share on Pinterest Two masks may provide greater protection from the spread of the novel coronavirus, but experts say it depends on the quality of the masks and the way they’re worn.
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