Disinfecting effect of copper on SARS-CoV-2 and other viruses

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In summary, the new Coronavirus is stable on copper for hours to days, but dies very quickly when it lands on other materials. This information may help researchers better understand how the virus spreads and how to prevent infection.
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When researchers reported last month that the novel Coronavirus causing the COVID-19 pandemic survives for days on glass and stainless steel but dies within hours after landing on copper, the only thing that surprised Bill Keevil was that the pathogen lasted so long on copper
https://www.smithsonianmag.com/science-nature/copper-virus-kill-180974655/

Keevil, a microbiology researcher at the University of Southampton (U.K.), has studied the antimicrobial effects of copper for more than two decades. He has watched in his laboratory as the simple metal slew one bad bug after another. He began with the bacteria that causes Legionnaire's Disease and then turned to drug-resistant killer infections like Methicillin-resistant Staphylococcus aureus (MRSA). He tested viruses that caused worldwide health scares such as Middle East Respiratory Syndrome (MERS) and the Swine Flu (H1N1) pandemic of 2009. In each case, copper contact killed the pathogen within minutes. "It just blew it apart," he says.

https://www.nih.gov/news-events/news-releases/new-coronavirus-stable-hours-surfaces
The virus that causes Coronavirus disease 2019 (COVID-19) is stable for several hours to days in aerosols and on surfaces, according to a new study from National Institutes of Health, CDC, UCLA and Princeton University scientists in The New England Journal of Medicine. The scientists found that severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) was detectable in aerosols for up to three hours, up to four hours on copper, up to 24 hours on cardboard and up to two to three days on plastic and stainless steel.

The effect of copper seems to be independently verified. One should continue to use hand sanitizer and wear a protective face cover/mask.
 
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The virus that causes Coronavirus disease 2019 (COVID-19) is stable for several hours to days in aerosols and on surfaces, according to a new study from National Institutes of Health, CDC, UCLA and Princeton University scientists in The New England Journal of Medicine. The scientists found that severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) was detectable in aerosols for up to three hours, up to four hours on copper, up to 24 hours on cardboard and up to two to three days on plastic and stainless steel. The results provide key information about the stability of SARS-CoV-2, which causes COVID-19 disease, and suggests that people may acquire the virus through the air and after touching contaminated objects. The study information was widely shared during the past two weeks after the researchers placed the contents on a preprint server to quickly share their data with colleagues.
 
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Most bronze and brass contains enough copper to be completely self sterilizing in eight hours according to the other physics forums articles. (Physorg?)

Turns out to be an ideal material for railings and doorknobs, before people even knew about microorganisms.
 
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https://www.cdc.gov/coronavirus/201...ng-and-Disinfection-of-Environmental-Surfaces

This is the CDC's current guidelines. In general surfaces need to be cleaned when pathogenic contamination is possible. However Covid transmission from surface to infect humans is low compared to airborne transmission, apparently by a large factor. SARS-Cov-2 is transmitted mostly by airborne particles.

As expressed above in other posts cladding everything with copper is beyond expensive and because the surface to human transmission of the disease is very low, it is an unacceptably low ROI to copper clad every public surface in every public building and many houses too.

Example:
As of this note, 20ga 12inch X 12inch copper sheets sell for US$11.40
To cover my front door on both sides, including handles would be 36 sheets * 11.40 = US$410.40. Actually my house has three exterior doors :oldgrumpy: so we are over US$1200. Buying copper door hardware is alternate choice and exspensive as well.

When surface disinfection is deemed necessary, surface disinfectants are very effective against SARS-Cov-2. Example, 1% bleach solution is very effective.

Thanks to everyone for helping the thread along. It is at an endpoint now.
Thread closed.
 
  • #7
jim mcnamara said:
To cover my front door on both sides, including handles
To cover the whole door would be a bit of an overkill, I think :woot:

There was another topic about this, about usage in hospitals. What come up there still stands. Copper is a very mild disinfectant. May help to cover slip-ups in cleaning, but in itself it's just not good enough.
As a doorknob, more nice than useful:doh:
 
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Related to Disinfecting effect of copper on SARS-CoV-2 and other viruses

1. How does copper disinfect SARS-CoV-2 and other viruses?

Copper has been shown to have a potent disinfecting effect on viruses, including SARS-CoV-2. The metal has a unique ability to disrupt the outer membrane of the virus, which is necessary for its survival and replication. This ultimately leads to the destruction of the virus and prevents it from infecting other cells.

2. Is copper an effective disinfectant against SARS-CoV-2 and other viruses?

Yes, numerous studies have shown that copper is highly effective in disinfecting viruses, including SARS-CoV-2. In fact, the metal has been found to have a 99.9% kill rate against the virus within just a few hours of contact.

3. How long does it take for copper to disinfect viruses?

The time it takes for copper to disinfect viruses can vary depending on the specific virus and the concentration of copper. However, studies have shown that copper can destroy viruses within a matter of hours, making it a relatively fast-acting disinfectant.

4. Can copper be used as a disinfectant in healthcare settings?

Yes, copper has been approved by the Environmental Protection Agency (EPA) as an effective disinfectant against viruses and is safe to use in healthcare settings. In fact, some hospitals have already started implementing copper surfaces in high-touch areas to help prevent the spread of infections.

5. Are there any potential risks or side effects of using copper as a disinfectant?

While copper is generally considered safe for use as a disinfectant, it is important to handle it properly and follow recommended guidelines. Exposure to high levels of copper can be toxic, so it is important to use it in the appropriate concentrations and follow safety precautions when handling it.

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