Virus lifespan on surfaces and in air explained
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Seems it is from a reputable source and I like that the message is being said in a fairly simple way that the ordinary person can understand.
Basically more than 72 hours on plastic and stainless steel surfaces lifespan, cardboard also 24 hours and can survive for 3 hours floating about in the air, which is also important to know to highlight the risks of being in buildings or anywhere near other people.
Isolation seems to be the sensible way to put a ‘firewall’ up to slow the spread
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Many thanks for posting.
It provides really useful insight into the importance of infection control and how to make it effective.
The difficulty is avoiding cross contamination.
The 3 hour lifespan airborne means its possible to breathe in infection in an empty room.
I am a bit confused.
If it has all gone after 72 hours or 4 hours, depending on the surface, what is the relevance of quoting the half-life figure?
If it has all gone after 72 hours or 4 hours, depending on the surface, what is the relevance of quoting the half-life figure?
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It is reputable - check out its impact factor. It's one of the top medical journals in the world.
Think it just is the science way it is tested, - half life period, then half again, etc, repeating until gone.
All we need to learn from it is the worst case lifespan. So 72 hours the virus is still in theory infectious at 72 hours on plastic surfaces, but not much beyond that.
3 hours lifespan airborne is scary possibility
the video is full of interpretation and selective quoting. the man shown is not, so far as I know, a reputable authority.
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Time it takes for half of the virus particles to become inactive.
So when it says 72 hours, that doesnt mean at 72.01 the virus just disappears.
The virus over time deteriorates and the half life is the time it takes for half of the virus particles to become inactive.
So on some surfaces it deteriorates more rapidly than others.
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Yes it is airborn that is why medical staff need full fitted masks with goggles (as it can enter via the eyes) as well as visors to stop patients coughing directly on them.
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I am referring to the article I posted. I have not watched the video so cannot comment.
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Both the Covid-19 and the SARS viruses had an aerosol half-life of 1.1 hours, meaning half the particles drop out of the air after that amount of time, and half of what remains drop out after another 1.1 hours. After a day, roughly nine half-lives, 0.002 (0.2 of 1%) of the original particles remain. As a result, the scientists said, “aerosol … transmission of [the new coronavirus] is plausible, since the virus can remain viable and infectious in aerosols for hours
Yes, I know what the terms mean but they are not compatible.
Either they are all dead after 72 hours (or 4), which the report says they are not - or
they decrease by 50% every 6 hours (or whatever). which depends on how many there were to start with until one left, then all dead.
Either they are all dead after 72 hours (or 4), which the report says they are not - or
they decrease by 50% every 6 hours (or whatever). which depends on how many there were to start with until one left, then all dead.
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