- 这CDC continues to advise wearing face masks to prevent the spread of COVID-19.
- Masks work by creating a physical barrier to the spread of virus-containing respiratory droplets.
- Growing evidence supports their effectiveness.
- While many Americans have objected to wearing masks, experts say their concerns are unfounded.
这Centers for Disease Control and Prevention (CDC) continues to strongly advise the wearing of面部面具to prevent the transmission of SARS-CoV-2, the virus that causes COVID-19.
On July 14, 2020 the CDC Director Dr. Robert Redfield said in a
While these recommendations have been met with some skepticism among the public, scientific evidence continues to show that masks do work.
关于原因，专家说，科学是非常简单的。
Transmission of the coronavirus is thought to occur through respiratory droplets that are released when people speak, sneeze, or talk, according toMeilan Han博士是密歇根大学肺部和关键课程中医学教授。
If these droplets land in the mouth or nose of people nearby, or are inhaled into the lungs, a person can contract the virus.
掩模创造一个物理屏障，捕获这些液滴，并防止它们在通常的围绕空气中蔓延到周围的空气中。
汉说,面具贝科变得更加重要use a significant proportion of people who get COVID-19 either don’t exhibit symptoms or there’s a delay before symptoms show up.
然而，研究表明，这些人仍然可以将病毒传递给周围的人。
汉族表示，数据表明，使用面部覆盖物可以帮助限制这些无症状和假设个体的疾病的传播。
In the July 14, 2020 issue of the Journal of the American Medical Association (JAMA), the authors of an
为了支持他们的意见，他们指出了两项案例研究，该研究发表了同一天。
这
Prior to the institution of the mask policy, new cases among healthcare workers who had either direct or indirect patient contact were increasing exponentially.
After the policy was put into place, however, the proportion of symptomatic healthcare workers who tested positive for COVID-19 “steadily declined,” according to the report.
这方面还谈到了一个
Both stylists had continued to see customers for several days after developing symptoms, but wore face masks as per local government ordinance. Ninety-eight percent of their customers wore masks as well.
Of the 139 customers that the stylists saw before being diagnosed, none developed COVID-19 symptoms during the follow-up period. None of their secondary contacts developed symptoms either.
In addition, of the 67 clients who agreed to be tested, none were positive for the virus.
Despite the scientific evidence supporting the wearing of masks, many Americans have voiced objections to their use.
We askedDr. Vinisha Amin，医院医学医师在马里兰州大学上切萨皮克健康抵消了一些常见的担忧和误导的神话目前正在传播。
1. Masks don’t work
“Let’s disintegrate that myth!” said Amin. “Masks are helpful and effective in protecting you and your loved ones from the virus.”
“There is a plethora of scientific data and research to help solidify this recommendation,” she added.
“在科学的世界中，基于证据的药物优先，我们必须在提出这些建议时对我们的医生和科学界进行信任，因为它们是为了您自己和亲人的医疗/保健安全，”amin说。
2.穿着它们很不舒服
“That means you have only tried one mask and gave up quickly on finding one that works well,” said Amin.
“是的，他们可能会营造湿度，但在这种情况下，穿着棉质材料面膜，这是一种比涤纶更透气的材料，”她建议。
“Yes, they might hurt your ears. In that situation find a mask where the elastic band that wraps around the ear is cloth covered or a softer elastic band which won’t irritate your skin,” she said.
“Yes, they fog up glasses. I have the same issue,” she added. “In that situation, place your eyeglasses over the mask on the bridge of your nose to help hold the mask in place and also help mitigate the fog under your glasses.”
3. I’m worried about carbon dioxide building up and making me sick
“There is absolutely no scientific reasoning that supports the claim that there is carbon dioxide buildup due to masks,” said Amin.
“Healthcare professionals such as our physicians and surgeons have been utilizing tighter and more impenetrable masks for decades, yet we are still able to breathe through them,” she said.
她继续，“面膜允许氧气渗透地渗透，因为它们允许二氧化碳渗透。”
4. I’m not at high risk
Amin acknowledged that the most vulnerable people are those with comorbid conditions or those who are immunocompromised.
然而，她注意到，“虽然你可能是健康和健康的，你甚至可能会意识到你已经获得了病毒，并且可以在家里脱离你脆弱的亲人的高病毒载荷。”
“We are all co-dependent on each other for our well-being and health as a community,” she explained.
这re’s growing evidence that masks do work in preventing the spread of COVID-19.
掩模通过捕获含有病毒的液滴，以非常简单的方式起作用，当我们说话，咳嗽或打喷嚏时，我们发出了含有病毒的液滴。
虽然面具背后的原则是一个简单的原则，但它们是含有这种疾病的非常重要的部分。
Experts say they work best when we all cooperate and wear them.