戴两个口罩比戴一个口罩更有效?以下是专家们的看法
加倍的面具，加倍的保护?不一定。
戴一个面罩抵御COVID-19的能力很强。根据最新的科学简报疾病控制和预防中心(美国疾病控制与预防中心)，口罩可以将冠状病毒感染的风险降低70%以上。但如果戴一个口罩能提供可靠的保护，那么同时戴两个口罩的效果会更好吗?一些人已经开始“双重伪装”，以增加他们保持无冠肺炎的几率，这一趋势让我们想知道科学是怎么说的。以下是专家告诉我们的。
戴着两个面具:专家们现在知道的
目前，很少有科学数据表明戴一个以上口罩的好处或坏处，斯科特·西格尔北卡罗来纳州温斯顿塞勒姆维克森林浸信会健康中心麻醉学主任、医学博士托马斯·h·欧文教授告诉我们健康．(西格尔博士对一系列布料材料进行了测试，看看它们在使用时的效果如何2020年研究用面罩与维克森林再生医学研究所合作。）
一个小研究直接讨论了同时佩戴两个口罩的好处，但还没有经过同行评审(这意味着该结果还不应该用于指导医生和临床医生)。在这项研究中，研究人员发现，当没有高功能口罩时，双口罩“三明治”可能会更好。
“如果口罩的过滤能力不是很强，戴两个口罩可能是合理的想法，”西格尔博士说。
包括西格尔博士在内的大多数研究都发现，多层布过滤病毒颗粒的效果优于单层布和两层布织得很紧的优质布料表现最好的。西格尔博士说:“对于质量较差的材料，多层可能效果更好。”
戴上两个口罩的效果是一样的——将两层相对效率较低的材料组合在一起，可能比使用一个质量差的口罩效果更好。此外，西格尔博士建议，戴一个相对宽松的外科或其他医用口罩，再戴一个紧贴的布口罩，可能会形成一个更好的口罩“三明治”。
传染病马里兰州约翰·霍普金斯大学卫生安全中心高级学者、医学博士Amesh Adalja同意戴两个口罩的效果取决于口罩材料。“你需要戴两个口罩的地方取决于口罩的质量，”Adalja博士说健康．“这取决于口罩的合适程度，以及它作为屏障的效果如何。”
在口罩里戴一个单独的过滤器怎么样?
另一个口罩趋势是一些人在口罩里插入过滤材料，如空调过滤器或咖啡过滤器。和双层口罩一样，如果你的口罩不合适或材料质量差，这样做可能会给你更多的保护。西格尔博士说，如果口罩在其他方面功能不佳，这可能会显著提高其功能。
纽约大学长岛朗格尼医院儿科传染病科主任伦纳德·克里洛夫医学博士说:“有证据表明，就像咖啡过滤器是限制小咖啡颗粒渗透的有效菌种一样，它也可能过滤一些COVID-19飞沫。健康．但克里洛夫博士补充说，口罩内的咖啡过滤器可能会让人感到不舒服，并使呼吸困难——这将导致佩戴者用力拉口罩，而不能恰当地戴上。他说:“最好让咖啡滤纸停留在制作一杯好咖啡的目的上。”
双重掩蔽的底线
问题归结为质量和数量:如果没有合适、有效的口罩，那么两个质量较差的口罩一起戴可能会提高保护效果。
然而，如果戴着两个口罩使呼吸困难，就丢掉其中一个。Segal博士说：“如果你不能舒适地佩戴口罩，那么任何口罩都不起作用。如果你将口罩折叠起来，使你无法通过口罩轻松呼吸，那么你可能会脱下口罩或在口罩周围呼吸，从而使过滤效果失效。”。
“这是一把双刃剑，”克里洛夫博士表示赞同。“额外的防护层听起来是个好主意，但额外的防护层可能会让呼吸变得更困难，让你更有可能戴上口罩以更好地呼吸，而不是充分地保持口罩的位置。”
双重掩蔽或添加过滤材料可能是最新的流行病趋势，但你不需要仅仅因为看到别人这么做就跳到他们身上。“共识是，合适的口罩要么是外科口罩，要么是两层布口罩，”克里洛夫博士说。
以下是关于最佳口罩的快速回顾:美国疾病控制与预防中心(CDC)建议选择有两层或两层以上可清洗、透气织物的口罩。它必须完全遮住你的鼻子和嘴，紧贴在脸的两侧(没有缝隙)。不要戴乙烯基或其他织物制成的口罩，这会使呼吸困难。疾控中心还建议不要带口罩呼气阀或通风口，因为它们会让病毒颗粒逃逸。
截至发稿时，这篇报道中的信息是准确的。然而，随着围绕COVID-19的形势继续发展，一些数据可能自发布以来发生了变化。在《健康》杂志努力使我们的故事尽可能最新的同时，我们也鼓励读者通过使用疾病预防控制中心，谁以及当地的公共卫生部门作为资源。
要想让我们的头条新闻进入你的收件箱，请注册健康生活通讯
You might have wild dreams when you're ill—fever can do that. But bizarre or emotionally intense fever dreams are not recognized as a symptom of COVID-19.
" }, { "answer_choices": [ { "answer_title": "Wear a mask", "correct_answer": false, "answer_id": "A1", "answer_value": 0, "$vf_selected_count": { "value": 7355, "lastModified": "2021-10-06T15:32:57.000Z" } }, { "answer_title": "Wash your hands", "correct_answer": false, "answer_id": "A2", "answer_value": 0, "$vf_selected_count": { "value": 42358, "lastModified": "2021-10-05T13:55:07.000Z" } }, { "answer_title": "Maintain social distance from others", "correct_answer": false, "answer_id": "A3", "answer_value": 0, "$vf_selected_count": { "value": 6534, "lastModified": "2021-10-06T14:13:58.000Z" } }, { "answer_title": "Wipe down groceries packaged in cardboard or plastic wrap with bleach", "correct_answer": true, "answer_id": "A4", "answer_value": 1, "$vf_selected_count": { "value": 62423, "lastModified": "2021-10-06T16:04:40.000Z" } } ], "answer_type": "text", "question_title": "To slow the spread of COVID-19, don't do this:", "question_id": "Q3", "answer_description": "CDC specifically warns against using disinfecting products on food or food packaging. You don't want to accidentally taint your food. Plus, the risk of COVID-19 from handling or consuming food is thought to be low. Use disinfectants like bleach to wipe down tables, countertops, and faucets
" }, { "answer_choices": [ { "answer_title": "A multi-layer medical procedure mask (aka a surgical mask or disposable face mask)", "correct_answer": false, "answer_id": "A1", "answer_value": 0, "$vf_selected_count": { "value": 9581, "lastModified": "2021-10-06T14:23:14.000Z" } }, { "answer_title": "A mask with a vent or valve", "correct_answer": true, "answer_id": "A2", "answer_value": 1, "$vf_selected_count": { "value": 84168, "lastModified": "2021-10-06T15:59:47.000Z" } }, { "answer_title": "A cloth mask made of two or more breathable, washable layers", "correct_answer": false, "answer_id": "A3", "answer_value": 0, "$vf_selected_count": { "value": 19023, "lastModified": "2021-10-06T16:04:40.000Z" } }, { "answer_title": "A cloth mask over a surgical mask", "correct_answer": false, "answer_id": "A4", "answer_value": 0, "$vf_selected_count": { "value": 5897, "lastModified": "2021-10-06T11:06:10.000Z" } } ], "answer_type": "text", "question_title": "Which masking option is least effective for stopping the spread of COVID-19?", "question_id": "Q4", "answer_description": "If your mask has a vent or valve, respiratory particles may escape and reach other people. Opt instead for a well-fitting mask with multiple layers, or wear a cloth mask over a disposable mask to secure the underlying mask to your face.
" }, { "answer_choices": [ { "answer_title": "Anal swab testing", "correct_answer": true, "answer_id": "A1", "answer_value": 1, "$vf_selected_count": { "value": 101084, "lastModified": "2021-10-06T16:04:40.000Z" } }, { "answer_title": "Nasal swab testing", "correct_answer": false, "answer_id": "A2", "answer_value": 0, "$vf_selected_count": { "value": 11879, "lastModified": "2021-10-06T14:53:48.000Z" } }, { "answer_title": "Saliva testing", "correct_answer": false, "answer_id": "A3", "answer_value": 0, "$vf_selected_count": { "value": 3329, "lastModified": "2021-10-06T15:07:21.000Z" } }, { "answer_title": "Throat swab testing", "correct_answer": false, "answer_id": "A4", "answer_value": 0, "$vf_selected_count": { "value": 2377, "lastModified": "2021-10-06T14:22:00.000Z" } } ], "answer_type": "text", "question_title": "Which COVID-19 screening method is not routinely in use in the US?", "question_id": "Q5", "answer_description": "Most diagnostic tests rely on mucus collected from your nose or throat, and some use saliva that you spit into a test tube. While China is using anal swab testing, that method hasn't caught on in the US.
" }, { "answer_choices": [ { "answer_title": "2 to 12 hours", "correct_answer": false, "answer_id": "A1", "answer_value": 0, "$vf_selected_count": { "value": 5487, "lastModified": "2021-10-06T15:59:16.000Z" } }, { "answer_title": "3 days", "correct_answer": false, "answer_id": "A2", "answer_value": 0, "$vf_selected_count": { "value": 26373, "lastModified": "2021-10-06T15:55:57.000Z" } }, { "answer_title": "14 days", "correct_answer": true, "answer_id": "A3", "answer_value": 1, "$vf_selected_count": { "value": 85969, "lastModified": "2021-10-06T16:04:40.000Z" } }, { "answer_title": "30 days", "correct_answer": false, "answer_id": "A4", "answer_value": 0, "$vf_selected_count": { "value": 840, "lastModified": "2021-10-06T12:30:35.000Z" } } ], "answer_type": "text", "question_title": "How long is the incubation period—the amount time from when you are infected with the novel coronavirus to when you exhibit symptoms?", "question_id": "Q6", "answer_description": "The incubation is thought to be 14 days, with a median of 4 to 5 days. (But keep in mind that some people never develop symptoms).
" }, { "answer_choices": [ { "answer_title": "A variant", "correct_answer": true, "answer_id": "A1", "answer_value": 1, "$vf_selected_count": { "value": 80102, "lastModified": "2021-10-06T16:04:40.000Z" } }, { "answer_title": "A high viral load", "correct_answer": false, "answer_id": "A2", "answer_value": 0, "$vf_selected_count": { "value": 9530, "lastModified": "2021-10-05T18:46:03.000Z" } }, { "answer_title": "A vaccine", "correct_answer": false, "answer_id": "A3", "answer_value": 0, "$vf_selected_count": { "value": 11428, "lastModified": "2021-10-03T13:20:11.000Z" } }, { "answer_title": "Another virus, like influenza", "correct_answer": false, "answer_id": "A4", "answer_value": 0, "$vf_selected_count": { "value": 17610, "lastModified": "2021-10-06T06:53:07.000Z" } } ], "answer_type": "text", "question_title": "A mutated version of the virus that causes COVID-19 is called:", "question_id": "Q7", "answer_description": "Variants of the virus that causes COVID-19 have been identified in the US and around the world. Scientists are studying these variants to learn how they spread and whether current vaccines will protect against them.
" }, { "answer_choices": [ { "answer_title": "Researchers have coined the term \"coronaphobia\" to describe the fear of contracting COVID-19", "correct_answer": false, "answer_id": "A1", "answer_value": 0, "$vf_selected_count": { "value": 9926, "lastModified": "2021-10-06T15:59:16.000Z" } }, { "answer_title": "The virus that causes COVID-19 can sometimes spread through tiny airborne particles", "correct_answer": false, "answer_id": "A2", "answer_value": 0, "$vf_selected_count": { "value": 14751, "lastModified": "2021-10-06T13:55:35.000Z" } }, { "answer_title": "The term \"long-haulers\" refers to people who experience long-term coronavirus symptoms", "correct_answer": false, "answer_id": "A3", "answer_value": 0, "$vf_selected_count": { "value": 6279, "lastModified": "2021-10-06T14:09:01.000Z" } }, { "answer_title": "COVID-19 is just like having the seasonal flu", "correct_answer": true, "answer_id": "A4", "answer_value": 1, "$vf_selected_count": { "value": 87715, "lastModified": "2021-10-06T16:04:40.000Z" } } ], "answer_type": "text", "question_title": "Which of the following statements is false?", "question_id": "Q8", "answer_description": "Early on, some people speculated that the novel coronavirus would behave like the seasonal flu. Now we know COVID-19 is much more contagious and spreads more rapidly than influenza.
" }, { "answer_choices": [ { "answer_title": "Women who want to become pregnant some day", "correct_answer": false, "answer_id": "A1", "answer_value": 0, "$vf_selected_count": { "value": 11228, "lastModified": "2021-10-05T19:39:10.000Z" } }, { "answer_title": "Anyone who has had a severe allergic reaction (anaphylaxis) to any vaccine ingredient", "correct_answer": true, "answer_id": "A2", "answer_value": 1, "$vf_selected_count": { "value": 65390, "lastModified": "2021-10-06T16:04:40.000Z" } }, { "answer_title": "People who have recovered from COVID-19", "correct_answer": false, "answer_id": "A3", "answer_value": 0, "$vf_selected_count": { "value": 9978, "lastModified": "2021-10-06T14:53:32.000Z" } }, { "answer_title": "People with underlying medical conditions", "correct_answer": false, "answer_id": "A4", "answer_value": 0, "$vf_selected_count": { "value": 32074, "lastModified": "2021-10-06T14:48:40.000Z" } } ], "answer_type": "text", "question_title": "Who should not get a COVID-19 vaccine?", "question_id": "Q9", "answer_description": "CDC does not recommend COVID vaccination if you've had a severe allergic reaction to any COVID vaccine ingredient. Contact your doctor if you have questions about whether it's safe for you to be vaccinated.
" }, { "answer_choices": [ { "answer_title": "You can't get COVID-19 from a COVID-19 shot", "correct_answer": false, "answer_id": "A1", "answer_value": 0, "$vf_selected_count": { "value": 19196, "lastModified": "2021-10-06T14:31:21.000Z" } }, { "answer_title": "Side effects are generally mild and short-lived", "correct_answer": false, "answer_id": "A2", "answer_value": 0, "$vf_selected_count": { "value": 7651, "lastModified": "2021-10-06T16:04:40.000Z" } }, { "answer_title": "It can take a few weeks after getting vaccinated for your body to build immunity to the virus", "correct_answer": false, "answer_id": "A3", "answer_value": 0, "$vf_selected_count": { "value": 4538, "lastModified": "2021-10-06T14:48:40.000Z" } }, { "answer_title": "None of the above", "correct_answer": true, "answer_id": "A4", "answer_value": 1, "$vf_selected_count": { "value": 87285, "lastModified": "2021-10-06T15:59:47.000Z" } } ], "answer_type": "text", "question_title": "Which of the following statements about COVID-19 are false?", "question_id": "Q10", "answer_description": "Vaccination is safe, effective, and an important tool for beating the pandemic.
" } ], "description": "News about the novel coronavirus is breaking nearly 24-7, which makes it challenging at best to keep up with the latest scientific evidence, especially when you're bombarded by false or misleading claims on social media. So how much do you really know about COVID-19? Take our quiz to gauge how knowledgeable you are.
", "gate": "none", "intro_page": true, "uuid": "c5d20a0c-6b54-4691-ac5b-7362b5c9e58c", "brand": "health", "headline": "Quiz: How Much Do You Know About Coronavirus?", "results": [ { "result_starting_range": 0, "button": { "_type": "button", "title": "Start Learning More", "src": "https://x.specialoffers.meredith.com/ats/show.aspx?cr=588&fm=201®source=20571" }, "result_ending_range": 3, "result_description": "Time to bone up on the basic facts about COVID-19. Check out our COVID-19 condition center and subscribe to our daily Healthy Living newsletter and never miss an update.
\nMore on COVID-19:
\nIs the Coronavirus Worse Than the Flu? Here's How the Two Illnesses Compare
\nLiving Through a Pandemic: A Guide to Surviving the New Normal
\nCoronavirus 101: Symptoms, Transmission, Severity and More
\nWhile Health is trying to keep our content as up-to-date as possible, we also encourage readers to stay informed on news and recommendations for their own communities by using the CDC, WHO, and their local public health department as resources.
", "result_title": "Not Much." }, { "result_starting_range": 4, "button": { "_type": "button", "title": "Learn Some More", "src": "https://x.specialoffers.meredith.com/ats/show.aspx?cr=588&fm=201®source=20571" }, "result_ending_range": 6, "result_description": "Not bad, but there’s much more to know about this illness. Subscribe to our daily Healthy Living newsletter and never miss an update.
\nMore on COVID-19:
\nIs the Coronavirus Worse Than the Flu? Here’s How the Two Illnesses Compare
\nLiving Through a Pandemic: A Guide to Surviving the New Normal
\nCoronavirus 101: Symptoms, Transmission, Severity and More
\nWhile Health is trying to keep our content as up-to-date as possible, we also encourage readers to stay informed on news and recommendations for their own communities by using the CDC, WHO, and their local public health department as resources.
", "result_title": "You Know Some Things About Some Things." }, { "result_starting_range": 7, "button": { "_type": "button", "title": "Stay Updated with Newsletters", "src": "https://x.specialoffers.meredith.com/ats/show.aspx?cr=588&fm=201®source=20571" }, "result_ending_range": 8, "result_description": "Terrific. Keep reading about COIVD-19 on Health.com and stay safe!
\nMore on COVID-19:
\nIs the Coronavirus Worse Than the Flu? Here’s How the Two Illnesses Compare
\nLiving Through a Pandemic: A Guide to Surviving the New Normal
\nCoronavirus 101: Symptoms, Transmission, Severity and More
\nWhile Health is trying to keep our content as up-to-date as possible, we also encourage readers to stay informed on news and recommendations for their own communities by using the CDC, WHO, and their local public health department as resources.
", "result_title": "You Are Certified to Debate on Social Media." }, { "result_starting_range": 9, "button": { "_type": "button", "title": "Sign Up for Newsletters", "src": "https://x.specialoffers.meredith.com/ats/show.aspx?cr=588&fm=201®source=20571" }, "result_ending_range": 10, "result_description": "You are definitely in the know! Keep coming back to Health.com for the latest information.
\nMore on COVID-19:
\nIs the Coronavirus Worse Than the Flu? Here’s How the Two Illnesses Compare
\nLiving Through a Pandemic: A Guide to Surviving the New Normal
\nCoronavirus 101: Symptoms, Transmission, Severity and More
\nWhile Health is trying to keep our content as up-to-date as possible, we also encourage readers to stay informed on news and recommendations for their own communities by using the CDC, WHO, and their local public health department as resources.
", "result_title": "You're a Know-it-All! " } ], "pqt_id": "cms/onecms_posts_health_7836984", "content_cms_id": "7863098", "registration_source": 20566, "amp_headline": "Quiz: How Much Do You Know About Coronavirus?", "type": "node-interactive-content", "meta": { "pinterest:media": "//www.dhljerseys.com/img/misc/og-generic.png", "og:image": "//www.dhljerseys.com/img/misc/og-generic.png", "og:image:width": null, "og:image:height": null, "twitter:image": "//www.dhljerseys.com/img/misc/og-generic.png", "description": "Quiz: How Much Do You Know About Coronavirus?" }, "social_headline": "Quiz: How Much Do You Know About Coronavirus?", "seo_headline": "Quiz: How Much Do You Know About Coronavirus?" }" data-cms-id="7836984" id="c5d20a0c-6b54-4691-ac5b-7362b5c9e58c">