看板 nCoV2019 關於我們 聯絡資訊
完整標題: Coronavirus can persist in air for hours and on surfaces for days: study 發稿單位:路透社 英文版 發稿時間:March 18, 2020 / 3:41 AM / Updated 13 hours ago 撰 稿 者:Gene Emery 原文連結: https://reut.rs/2UhtOKK https://www.reuters.com/article/us-health-coronavirus-study/new-coronavirus- can-persist-in-air-for-hours-and-on-surfaces-for-days-study-idUSKBN2143QP (Reuters) - The highly contagious novel coronavirus that has exploded into a global pandemic can remain viable and infectious in droplets in the air for hours and on surfaces up to days, according to a new study that should offer guidance to help people avoid contracting the respiratory illness called COVID-19. Scientists from the National Institute of Allergy and Infectious Diseases (NIAID), part of the U.S. National Institutes of Health, attempted to mimic the virus deposited from an infected person onto everyday surfaces in a household or hospital setting, such as through coughing or touching objects. They used a device to dispense an aerosol that duplicated the microscopic droplets created in a cough or a sneeze. The scientists then investigated how long the virus remained infectious on these surfaces, according to the study that appeared online in the New England Journal of Medicine on Tuesday - a day in which U.S. COVID-19 cases surged past 5,200 and deaths approached 100. The tests show that when the virus is carried by the droplets released when someone coughs or sneezes, it remains viable, or able to still infect people, in aerosols for at least three hours. On plastic and stainless steel, viable virus could be detected after three days. On cardboard, the virus was not viable after 24 hours. On copper, it took 4 hours for the virus to become inactivated. In terms of half-life, the research team found that it takes about 66 minutes for half the virus particles to lose function if they are in an aerosol droplet. That means that after another hour and six minutes, three quarters of the virus particles will be essentially inactivated but 25% will still be viable. The amount of viable virus at the end of the third hour will be down to 12.5%, according to the research led by Neeltje van Doremalen of the NIAID’s Montana facility at Rocky Mountain Laboratories. On stainless steel, it takes 5 hours 38 minutes for half of the virus particles to become inactive. On plastic, the half-life is 6 hours 49 minutes, researchers found. On cardboard, the half-life was about three and a half hours, but the researchers said there was a lot of variability in those results “so we advise caution” interpreting that number. The shortest survival time was on copper, where half the virus became inactivated within 46 minutes. 對照 八卦板新聞 路透社 日文版 新型コロナ、空中で数時間生存 米研究所が警告 https://jp.mobile.reuters.com/article/amp/idJPKBN214400?taid=5e71543f72e8fa000 [17日 ロイター] - 米国立アレルギー感染症研究所(NIAID)は 、新型コロナウイルスのエアロゾル化に関する研究結果を明らかにした。 エアロゾルは飛沫よりも小さな粒子のことで、くしゃみなどによって発生 する飛沫とは異なり、限定空間内で一定時間浮遊する。研究者らは新型コ ロナがエアロゾル化した後、空中で最低3時間は生き残ると警告した。 またウイルスが物体に付着した場合、生存期間は物質の種類によって異な り、プラスチックやステンレスは3日以上、段ボール紙は1日、銅は4時 間だった。 美國過敏與傳染病研究所(NIAID)透露了一項新型冠狀病毒氣溶膠化的研究結果。 氣溶 膠是小於飛沫的粒子,與噴嚏產生的飛沫不同,它們在密閉的空間中可漂浮一定的時間。 研究人員警告說,新型冠狀病毒在氣溶膠化後將在空氣中存活至少三個小時。 當病毒粘附到物體上時,存活時間根據物質的類型而變化,塑料或不銹鋼為3天或更長,瓦 楞紙為1天,銅為4小時。 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 150.116.178.41 (臺灣) ※ 文章網址: https://www.ptt.cc/bbs/nCoV2019/M.1584589342.A.AD6.html
HaHaPoint: 銅器要大賣了 123.192.31.46 03/19 11:43
※ 編輯: bluwind1 (150.116.178.41 臺灣), 03/19/2020 11:44:39
dogayo: 已經確定可以用氣溶膠傳播了!? 27.242.198.64 03/19 11:44
我就是想問這個,這算是氣溶膠型態傳播的證據了嗎?
cress0128: 正式宣布青銅器時代來臨140.115.110.134 03/19 11:44
※ 編輯: bluwind1 (150.116.178.41 臺灣), 03/19/2020 11:45:22
hucgly: 銅衣銅帽作起來~~~ 61.220.26.184 03/19 11:45
insominia: 銅學的時代來臨了 114.136.155.65 03/19 11:46
drah: 一個月前的消息了 114.47.87.230 03/19 11:46
win8719: 密閉空間 1.34.196.173 03/19 11:48
k5792688: 想辦法讓它無法變氣溶膠。戴口罩 42.77.145.210 03/19 11:48
star1231: 二手煙,製造氣溶膠...XD 220.133.116.45 03/19 11:50
scrazy77: 就算存活,量應該也要達到才能致病? 220.135.142.80 03/19 11:50
kuma660224: 空氣中有超小微粒 不代表能傳播180.217.152.128 03/19 11:52
kuma660224: 只是説能存在而已....180.217.152.128 03/19 11:52
g3sg1: 空二水二才能解鎖 36.229.183.100 03/19 11:52
kuma660224: 比飛沫還小 可能要短時間高濃度180.217.152.128 03/19 11:53
DEMO123: 氣溶膠是什麼,想發問 42.72.27.136 03/19 11:53
kuma660224: 才有威脅性,例如密集方艙?180.217.152.128 03/19 11:53
kuma660224: 氣體中有懸浮的超小微粒的狀態阿180.217.152.128 03/19 11:54
kuma660224: 像雲霧或空污都是氣體帶別的東西180.217.152.128 03/19 11:56
Satoman: 回歸銅器時代 1.161.250.200 03/19 11:58
kuma660224: PM2.5也是一種氣懸膠體180.217.152.128 03/19 12:00
wahaha99: https://tinyurl.com/v97x8x7 就這篇吧? 1.171.61.225 03/19 12:01
wahaha99: 印象中前面有人貼還被灰? XD 1.171.61.225 03/19 12:01
micotosai: 香港上次不就抽氣孔有可能傳到不同樓層 123.192.81.73 03/19 12:05
micotosai: 有在做新聞 123.192.81.73 03/19 12:05
AliceMisa: 這有確認了嗎?不是只有病毒濃度極高 39.10.39.107 03/19 12:06
AliceMisa: 場所才會發生? 39.10.39.107 03/19 12:06
matlab1106: 笑大陸研究的又被打臉了 防疫真的不要 36.239.127.123 03/19 12:09
matlab1106: 有政治立場 36.239.127.123 03/19 12:10
kuma660224: 這沒有證實氣體傳播啊180.217.152.128 03/19 12:14
cheetahspeed: 銅鎖子甲要去哪買 49.216.214.145 03/19 12:15
geral74026: 不要有政治立場 台灣早就淪陷 117.56.51.37 03/19 12:15
Nobita: 就一分研究報告而已 看你自己信不信 111.241.63.89 03/19 12:16
kuma660224: 那就超小飛沫而已 太輕所以沒落地180.217.152.128 03/19 12:16
kuma660224: 但應該沒有傳染力180.217.152.128 03/19 12:17
Nobita: 若類似的報告很多 可信度就高一點 111.241.63.89 03/19 12:17
Nobita: 但還是沒有辦法證明什麼事 111.241.63.89 03/19 12:17
kuma660224: 不然R0早就超級高 不可能疫調180.217.152.128 03/19 12:18
edward0811: 難怪人類幾千年前是青銅器開始 101.9.162.214 03/19 12:20
lise1017: 美國的網路速度還在撥接時代嗎?223.138.231.114 03/19 12:22
balberith: 密閉空間內比飛沫小的懸浮微粒...阿就 122.121.154.39 03/19 12:23
balberith: 之前講的醫療環境下才比較容易遇到的 122.121.154.39 03/19 12:23
balberith: 情況啊... 122.121.154.39 03/19 12:24
kuma660224: 目前看來空氣懸浮應沒足夠病毒180.217.152.128 03/19 12:25
kuma660224: 除非封閉病房持續累積累積累積...180.217.152.128 03/19 12:25
lavign: 居家隔離有的家人也沒事 42.76.144.25 03/19 12:25
kuma660224: 但濃度也很難足夠 否則34例病房180.217.152.128 03/19 12:27
magamanzero: 恩 所以才會說保持距離 60.248.126.193 03/19 12:27
kuma660224: 早就該大量命中180.217.152.128 03/19 12:27
dearjohn: 囧 13小時 59.127.152.18 03/19 12:28
dearjohn: 看錯了QAQ 59.127.152.18 03/19 12:28
jessicali: 音樂家綵排咳嗽,其他人都沒中了223.137.226.100 03/19 12:30
jessicali: 空間小而量要大才危險吧223.137.226.100 03/19 12:30
aspnet: 之前韓國電梯1分鐘感染說不定就是因為氣膠111.242.103.199 03/19 12:36
dss1017: 魔聖銅器有用啦 111.82.21.42 03/19 12:37
dsa3717: 有驗出病毒跟有傳染力是兩回事啊 61.228.193.65 03/19 12:44
winglight: 那228音樂家事件真的危險了… 220.130.23.55 03/19 12:46
webster1112: 不是政治立場 是老共資訊真假互摻 61.231.89.66 03/19 13:03
webster1112: h才有辦法騙蠢貨 跟迷惑正常人!!! 61.231.89.66 03/19 13:04
webster1112: 真假互摻 當你費力費時判斷出 死亡已 61.231.89.66 03/19 13:05
webster1112: 在眼前 真假已無意義了 !! 61.231.89.66 03/19 13:05
kuma660224: 幾例病毒才能傳播肺炎 難以判斷180.217.152.128 03/19 13:24
kuma660224: 但這病毒跟SARS類似180.217.152.128 03/19 13:24
kuma660224: 幾乎能經驗判斷 飛沫與接觸才是180.217.152.128 03/19 13:25
kuma660224: 有效傳播方式,幾顆小病毒沒啥用180.217.152.128 03/19 13:25
kuma660224: 飛沫帶一堆才有足夠病毒濃度180.217.152.128 03/19 13:26
hwider: 推推kuma大大解說218.166.136.183 03/19 13:26
kuma660224: 沒必要因意義不明的研究資料恐慌180.217.152.128 03/19 13:26
artning: 只有醫院跟電梯這種密閉空間要擔心吧 118.163.24.221 03/19 13:28
kuma660224: 電梯時間短 可能蠻難累積空氣濃度180.217.152.128 03/19 13:40
kuma660224: 電梯怕是太近 飛沫傳播直接噴你180.217.152.128 03/19 13:40
kuma660224: 或手帶飛沫摸按鈕的接觸傳播180.217.152.128 03/19 13:40
kuma660224: 電梯要摸按鈕 且無法保持1-2米180.217.152.128 03/19 13:41
jabari: 就aspnet貼的啊 貼兩次 兩次都秒灰 95.90.191.245 03/19 13:48
jabari: 以後得找個小記者寫成新聞 才能討論 煩 95.90.191.245 03/19 13:48
frice: 這種幾乎所有飛沫傳染的都會有啊 223.136.22.130 03/19 14:49
frice: 硬要扯到傳染途徑上就扯遠了 223.136.22.130 03/19 14:50
smallcar801: 新加坡在負壓病房空氣都採不到了,223.137.207.125 03/19 15:11
smallcar801: 目前大多數都採不到,只有零星幾個223.137.207.125 03/19 15:11
smallcar801: 實驗說有採集,實際上還要澄清實驗223.137.207.125 03/19 15:12
smallcar801: 有沒有問題,中國被人家笑也是中國223.137.207.125 03/19 15:12
smallcar801: 研究員自己把信用敗光的,每一種新223.137.207.125 03/19 15:12
smallcar801: 發現通常都是要等大型研究機構確定223.137.207.125 03/19 15:12
smallcar801: 能複製實驗結果才能蓋倌論定223.137.207.125 03/19 15:12
lucypudding: https://reurl.cc/X641K7218.234.146.139 04/23 11:07