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Infected surfaces - do we know?
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Has it been established yet if you can become infected through touch or is it just airborne?
I saw the news this morning from China where a guy was hosing the pavement with sanitiser , is that just for show? |
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By (user no longer on site)
over a year ago
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I remember scenes of people dropping dead in the streets of China, Wuhan more specifically. Was the whole reason countries governments supposedly agreed to change things massively to their populations. Funnily enough the pandemic part of the people dying in the streets didn’t catch on around the rest of the world. As people are saying, it’s a clever virus. Either that or were a truck load of gullible fucks.
The world is a show!  |
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"Has it been established yet if you can become infected through touch or is it just airborne?
I saw the news this morning from China where a guy was hosing the pavement with sanitiser , is that just for show? "
I could be wrong but I think all viruses live on hard surfaces for a certain amount of time. |
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By *atEvolutionCouple
over a year ago
atlantisEVOLUTION. Stoke |
"
I could be wrong but I think all viruses live on hard surfaces for a certain amount of time."
Up to 72 hours - and you can then put in your eyes or mouth by touching your face - in turn it can infect your lungs - and then you breathe it back out as an airborne virus or by touching wet parts like your eyes or mouth and placing it onto a surface all over again. |
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By (user no longer on site)
over a year ago
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"
I could be wrong but I think all viruses live on hard surfaces for a certain amount of time.
Up to 72 hours - and you can then put in your eyes or mouth by touching your face - in turn it can infect your lungs - and then you breathe it back out as an airborne virus or by touching wet parts like your eyes or mouth and placing it onto a surface all over again."
The airborne virus bit sounds just like the NHS TV advert with the black droplets. That was frightening. But was such a relief to know when you opened a window the droplets extracted themselves into the atmosphere. That also explains why people need to wear masks outdoors, especially when walking past an open window.
And is 72 hours enough?
Some schools have been quarantined Christmas cards for two weeks before they can be handed out.
Better be safe than sorry. |
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By *atEvolutionCouple
over a year ago
atlantisEVOLUTION. Stoke |
"Lol
It was proven over a year ago that the chances of catching it from a surface are minisule."
So is being run over by a car - but where you walk and shop there are not many cars compared to how many people there are. |
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By (user no longer on site)
over a year ago
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"Lol
It was proven over a year ago that the chances of catching it from a surface are minisule.
So is being run over by a car - but where you walk and shop there are not many cars compared to how many people there are. "
Absolutely no idea what you're on about there. |
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By *I TwoCouple
over a year ago
PDI 12-26th Nov 24 |
"Lol
It was proven over a year ago that the chances of catching it from a surface are minisule."
Have you a copy of the results if the study by any chance ?
I have a recollection they found live virus on the cruise ship two weeks after the passengers left ?
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By (user no longer on site)
over a year ago
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"Lol
It was proven over a year ago that the chances of catching it from a surface are minisule.
Have you a copy of the results if the study by any chance ?
I have a recollection they found live virus on the cruise ship two weeks after the passengers left ?
"
But will it pose any risk?
Viruses can only reproduce after infecting a living cell - a process called viral replication.
The longer the virus is left on a surface, a doorknob for example, the less able it will be to cause a new infection. |
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By *I TwoCouple
over a year ago
PDI 12-26th Nov 24 |
"Lol
It was proven over a year ago that the chances of catching it from a surface are minisule.
Have you a copy of the results if the study by any chance ?
I have a recollection they found live virus on the cruise ship two weeks after the passengers left ?
But will it pose any risk?
Viruses can only reproduce after infecting a living cell - a process called viral replication.
The longer the virus is left on a surface, a doorknob for example, the less able it will be to cause a new infection."
Never heard that one before, surely it's live or dead virus |
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Not that it was needed (given it’s a respiratory virus!) but studies long ago said rush from contact was so small as to be irrelevant. Anyone wiping stuff down is doing it for health and safety theatre. You might as well wear a crash helmet when you go jogging in case you fall over! |
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"Lol
It was proven over a year ago that the chances of catching it from a surface are minisule.
Have you a copy of the results if the study by any chance ?
I have a recollection they found live virus on the cruise ship two weeks after the passengers left ?
But will it pose any risk?
Viruses can only reproduce after infecting a living cell - a process called viral replication.
The longer the virus is left on a surface, a doorknob for example, the less able it will be to cause a new infection.
Never heard that one before, surely it's live or dead virus"
Viruses are neither live nor dead. They don't take in food of any sort, they don't respire. They don't excrete waste of any sort. They don't reproduce. By themselves they are just inert blobs of protein, no more alive than a string of numbers on an internet cable.
But if that blob of protein happens to accidentally land on a cell wall that happens to have other particular proteins, then it will get absorbed into the cell. Like if that string of numbers lands into the input wire of a computer that happens to be running a suitable program (just another string of numbers) then it will get accepted into that computer.
And if that blob of protein gets into the reproduction machinery inside that cell, then the cell might start making duplicates of the protein. Just like how the computer might start making duplicates of the string of numbers.
But it's the cell or the computer that does all the hard work, the virus (protein or numbers) is just something that gets blindly copied. The virus is not alive or dead, it just is.
But any blob of protein if left to dry out will decompose a bit, and eventually (whether after minutes or hours) it's structure won't be a good enough match to get sucked into the cell. Or if it does get sucked in, won't be the right shape to fit into the duplicator.
Like that string of numbers, if it gets bounced around long enough, some of the digits might get altered, and it might then not be accepted by any computer. |
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By (user no longer on site)
over a year ago
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Having done a quick skim, I've seen papers that suggest days if there's mositure to help preserve bit, and some that suggest hours in dry conditions . And it gets reduced by sunlight.
I suspect therefore it's complex and multifaceted. |
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By (user no longer on site)
over a year ago
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"I remember scenes of people dropping dead in the streets of China, Wuhan more specifically. Was the whole reason countries governments supposedly agreed to change things massively to their populations. Funnily enough the pandemic part of the people dying in the streets didn’t catch on around the rest of the world. As people are saying, it’s a clever virus. Either that or were a truck load of gullible fucks.
The world is a show! "
I have no memory of seeing anything like this at all. Got any links?
Mr |
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From a CDC page on this very subject[1]:
"Quantitative microbial risk assessment (QMRA) studies have been conducted to understand and characterize the relative risk of SARS-CoV-2 fomite transmission and evaluate the need for and effectiveness of prevention measures to reduce risk. Findings of these studies suggest that the risk of SARS-CoV-2 infection via the fomite transmission route is low, and generally less than 1 in 10,000, which means that each contact with a contaminated surface has less than a 1 in 10,000 chance of causing an infection"
A previous bit of the article explains that fomites are virus containing particles deposited onto surfaces.
[1] https://www.cdc.gov/coronavirus/2019-ncov/more/science-and-research/surface-transmission.html
So about 1 in 10000 per touch of a contaminated surface. Probably not a big enough risk to be worried about at an individual level and I'd say also a small enough risk that all that effort we put into surface decontamination and hand sanitising probably isn't worth it. At least not for covid. Masks, on the other hand, look like a reasonably large win for a relatively small cost. Ventilation is even better, albeit often harder to arrange (and colder!) |
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By (user no longer on site)
over a year ago
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"From a CDC page on this very subject[1]:
"Quantitative microbial risk assessment (QMRA) studies have been conducted to understand and characterize the relative risk of SARS-CoV-2 fomite transmission and evaluate the need for and effectiveness of prevention measures to reduce risk. Findings of these studies suggest that the risk of SARS-CoV-2 infection via the fomite transmission route is low, and generally less than 1 in 10,000, which means that each contact with a contaminated surface has less than a 1 in 10,000 chance of causing an infection"
A previous bit of the article explains that fomites are virus containing particles deposited onto surfaces.
[1] https://www.cdc.gov/coronavirus/2019-ncov/more/science-and-research/surface-transmission.html
So about 1 in 10000 per touch of a contaminated surface. Probably not a big enough risk to be worried about at an individual level and I'd say also a small enough risk that all that effort we put into surface decontamination and hand sanitising probably isn't worth it. At least not for covid. Masks, on the other hand, look like a reasonably large win for a relatively small cost. Ventilation is even better, albeit often harder to arrange (and colder!)"
interesting. Where there is high contact, say elevators, doors, then cleaning may be worthwhile. But less so in low contact areas. |
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