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| [#1] N95 與 外科口罩的分別 - 美國疾病及管制中心 What makes N95 respirators different from facemasks (sometimes called a surgical mask)? N95 respirators reduce the wearer'ss exposure to airborne particles, from small particle aerosols to large droplets. N95 respirators are tight-fitting respirators that filter out at least 95% of particles in the air, including large and small particles. Not everyone is able to wear a respirator due to medical conditions that may be made worse when breathing through a respirator. Before using a respirator or getting fit-tested, workers must have a medical evaluation to make sure that they are able to wear a respirator safely. Achieving an adequate seal to the face is essential. United States regulations require that workers undergo an annual fit test and conduct a user seal check each time the respirator is used. Workers must pass a fit test to confirm a proper seal before using a respirator in the workplace. When properly fitted and worn, minimal leakage occurs around edges of the respirator when the user inhales. This means almost all of the air is directed through the filter media. Unlike NIOSH-approved N95s, facemasks are loose-fitting and provide only barrier protection against droplets, including large respiratory particles. No fit testing or seal check is necessary with facemasks. Most facemasks do not effectively filter small particles from the air and do not prevent leakage around the edge of the mask when the user inhales. The role of facemasks is for patient source control, to prevent contamination of the surrounding area when a person coughs or sneezes. Patients with confirmed or suspected COVID-19 should wear a facemask until they are isolated in a hospital or at home. The patient does not need to wear a facemask while isolated. https://www.cdc.gov/coronavirus/2019-ncov/hcp/respirator-use-faq.html  最後修改時間: 2020-03-20 04:55:24 |
bankguy 正式會員193.xxx.xxx.29 |
2020-03-20 04:44 | |
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| [#2] N95 與 外科口罩的分別 - 美國疾病及管制中心 Surgical Mask does NOT provide the wearer with a reliable level of protection from inhaling smaller airborne particles and is not considered respiratory protection. N95 Respirator filters out at least 95% of airborne particles including large and small particles. =========================================================== Yes, assuming that Fit-testing and User Seal Check are performed for N95 wearer. |
bankguy 正式會員 193.xxx.xxx.29 |
2020-03-20 05:02 |
| [#3] N95 與 外科口罩的分別 - 美國疾病及管制中心 外科口罩自欺欺人 |
vt75 正式會員 172.xxx.xxx.95 |
2020-03-20 08:47 |
| [#4] N95 與 外科口罩的分別 - 美國疾病及管制中心 [#3] The role of facemasks is for patient source control, to prevent contamination of the surrounding area when a person coughs or sneezes. 即係主要作用係阻止帶病毒者播毒。 |
bankguy 正式會員 193.xxx.xxx.29 |
2020-03-20 08:52 |
| [#5] N95 與 外科口罩的分別 - 美國疾病及管制中心 問題係好多人以為外科口罩可以濾到武漢肺炎 |
vt75 正式會員 172.xxx.xxx.95 |
2020-03-20 09:26 |
| [#6] N95 與 外科口罩的分別 - 美國疾病及管制中心 一開始已經係咁講，不過資訊太多太亂。如果要做到真正保護要著hazmat suit + 個 decontamination room. 搵高規格外科口罩不如搵大生產商正貨，大陸黑心嘢貼面戴下下吸氣直接入肺唔致癌就天下奇聞。 |
t4456 會員 119.xxx.xxx.152 |
2020-03-20 09:43 |
| [#7] N95 與 外科口罩的分別 - 美國疾病及管制中心 #4 咁即係西人嘅約定之俗，所講戴罩者係領咗嘢，所以需要戴，茅領嘢戴罩企哋會投以不屑態度 |
bliss33 會員 182.xxx.xxx.132 |
2020-03-20 09:57 |
| [#8] N95 與 外科口罩的分別 - 美國疾病及管制中心 [#7] Then it goes back to the question: you don't know whether you are infected but without symptoms. 最後修改時間: 2020-03-20 10:01:21 |
bankguy 正式會員 193.xxx.xxx.29 |
2020-03-20 10:01 |
| [#9] N95 與 外科口罩的分別 - 美國疾病及管制中心 唔駛睇都知係防播毒多過自保啦...... 好明顯您自己都會覺得係有leakage。 其實醫院外帶口罩 最早期係睇日劇， 見D人傷風就會習慣地帶口罩~ |
stranger 正式會員 219.xxx.xxx.213 |
2020-03-20 10:06 |
| [#10] N95 與 外科口罩的分別 - 美國疾病及管制中心 Can a face mask protect me from coronavirus? Covid-19 myths busted Claim: ‘Face masks don't work’ Wearing a face mask is certainly not an iron-clad guarantee that you won't get sick – viruses can also transmit through the eyes and tiny viral particles, known as aerosols, can penetrate masks. However, masks are effective at capturing droplets, which is a main transmission route of coronavirus, and some studies have estimated a roughly five fold protection versus no barrier alone (although others have found lower levels of effectiveness). If you are likely to be in close contact with someone infected, a mask cuts the chance of the disease being passed on. If you're showing symptoms of coronavirus, or have been diagnosed, wearing a mask can also protect others. So masks are crucial for health and social care workers looking after patients and are also recommended for family members who need to care for someone who is ill – ideally both the patient and carer should have a mask. However, masks will probably make little difference if you're just walking around town or taking a bus so there is no need to bulk-buy a huge supply. https://www.theguardian.com/world/2020/mar/19/does-coronavirus-only-kill-the-elderly-covid-19-myths-busted ============================================================ 香港醫學界呼籲全民戴口罩，就係因為武漢肺炎呢隻病毒，完全冇病徵嘅隱性病人都可以播毒。呢點係同沙士好唔同。沙士時好多人都唔戴口罩，我戴 3M 8210 返工啲人望住哂，宜家就好平常。 特朗普經常強調冇病徵唔使戴口罩，可能美國人口冇香港咁密集，又或者因為知道個個戴就唔會有足夠供應。 最後修改時間: 2020-03-20 10:19:21 |
bankguy 正式會員 193.xxx.xxx.29 |
2020-03-20 10:11 |
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