How Long Does Coronavirus Last On Surfaces?

Coronavirus likes living in us, but how does the virus go surviving on surfaces around us?

How long can the virus survive on surfaces?

Marcus: The New England Journal of Medicine just published a study that tested how long the virus can remain stable on different kinds of surfaces within a controlled laboratory setting. They found that it was still detectable on copper for up to four hours, on cardboard for up to 24 hours, and on plastic and steel for up to 72 hours.



But it’s important to note that the amount of virus decreased rapidly over time on each of those surfaces. And so the risk of infection from touching them would probably decrease over time as well.

Could you become infected from just a single particle of coronavirus?

Iwasaki: There’s a certain amount of viral particle that you need to be exposed to become infected. If you just had one viral particle on your finger, it’s unlikely that you’re going to be infected. Some viruses are very potent, you only need like 10 particles to get infected, while others you [may] need millions. The fewer viral particles you’re exposed to, the less likely you’re going to get infected. That’s why the amount of virus on a surface is important.

Source: https://www.theguardian.com/us-news/2020/apr/04/how-long-does-coronavirus-live-on-different-surfaces

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