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  • Are you sick?


  • Don't you dare sneeze on me.


  • Do you know how far your germs can travel?


  • Normally you hold about half a liter of fluid in your lungs, so when you sneeze, you're able to spray as much as a water bottle's worth of mucus into the air around you.

    一般來說我們的肺部裡裝有 500 毫升的液體,所以當你打噴嚏的時會把那些黏液噴灑到你四周的空氣中。

  • It shoots out of your mouth in the form of moist, germ-infested clouds traveling up to 35 meters per second.

    從你嘴巴噴出帶有細菌且濕潤的雲狀物會以每秒 35 米的速度傳播。

  • That's fast enough to give you a speeding ticket on the highway.


  • Once that cloud hits the air, it expands, breaking up into snotty strings, then a series of different-sized droplets all trapped in a turbulent gas cloud.


  • One brave group at MIT discovered that the biggest droplets can travel up to two meters, about the distance between your desk and two desks away.


  • But most other droplets, those travel much farther, up to eight meters.


  • That's about five desks away.


  • Not only that, the germ-infested gas cloud is less dense than the air around it, so it rises upwards right to where ventilation systems and other people's unsuspecting noses and mouths await.


  • Even though these are relatively smaller droplets, they're probably still teeming with harmful pathogens like the flu virus.


  • Even worse, depending on the ventilation, they can spread through a room in just a few seconds and remain suspended for up to 10 minutes.

    不過這要視抽風系統的情況而異,情況更糟的話可以在幾秒內傳播至整個房間並停留至 10 分鐘。

  • Now, if you happen to notice someone around you sneeze or cough, you can hold your breath as you move out of range.


  • But during the flu season, that might not even be enough, because there are danger zones everywhere; especially on surfaces like desks, doorknobs, and steel handrails.


  • It turns out the flu virus has been found to survive for 24 hours on a steel surface, and if you touch that surface and don't wash your hands before eating, you may have just gotten infected.

    有研究發現流感病毒在鋼質上可以存活 24 小時,如果你摸過這些東西的表面後沒有先洗手才進食的話,你很有可能會受到感染。

  • So, let's say you go into work sick with the flu one day and you start to sneeze.


  • Now, according to one study, you'll probably only infect one to two other people.


  • You're clearly showing symptoms of the flu.


  • However, it's gonna take a few days for symptoms to show up in other people you've infected, so those poor souls unknowingly also come into work sick over the next few days, and they will potentially infect one to two more people.


  • In an office of 100 desks, this could mean 10 or 15 sick people by the end of two weeks.

    兩個星期後,這 100 人的辦公室裡就出現 10 或 15 位病人。

  • That's over 10% of the office.

    這佔了辦公室人數的 10%。

  • And all of it started with just one sick person.


  • You.


  • All thanks to the germ-laden cloud you so generously shared.


  • So, the next time you're not feeling great and you're sneezing up a storm, just think about your poor coworkers, and take a sick day for yourself and for them.


Are you sick?


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【新冠肺炎】新冠病毒疫情肆虐期間不要小看一個噴嚏! (How Contagious Is A Single Sneeze?)

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    Fibby 發佈於 2020 年 02 月 08 日