[新聞] 新型冠狀病毒可在空氣中存活數小時

看板nCoV2019作者bluwind1 (藍天的風)時間4年前 (2020/03/19 11:42)推噓21(24推 3噓 57→)

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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

推

HaHaPoint

03/19 11:43, 4年前 , 1^F

03/19 11:43, 1^F

※ 編輯: bluwind1 (150.116.178.41 臺灣), 03/19/2020 11:44:39

推

dogayo

03/19 11:44, 4年前 , 2^F

03/19 11:44, 2^F

我就是想問這個，這算是氣溶膠型態傳播的證據了嗎?

推

cress0128