4 ms·

Coronavirus May Stay on Plastic and Stainless Steel for Days, Study Says

23 points by deegles 7y ago

airbreather 7y ago
Copper and brass may well be much more effective than the article suggests, plenty of info on the web, start with the Copper Development Association.
- Mediterraneo10 7y ago
  From the Association’s website: > The Copper Development Association Inc. (CDA) is the market development, engineering and information services arm of the copper industry, chartered to enhance and expand markets for copper and its alloys in North America. So, it is a marketing arm. I don’t see how this would be any more reasonable a source of info than the Egg Council for eggs.
  - airbreather 7y ago
    You might think on the surface this is a fair comment, but a brief internet search would reveal that there is an overbearing amount of independant evidence onthis matter and the CDA are quite conservative and balanced in presenting it. It was on this basis and acquired knowledge I have from some years interacting with them that I recommended them as a one stop starting point for this info, all items are referenced. But I guess you did not actually go to their webpage to investigate, or do any actual research of your own, so that is how such an erroneous opinion might have formed.
    - c22 7y ago
      GP literally quoted their webpage. Maybe you should stop being cryptic and tell us what you know? I checked out the copper.org website and saw a link on their home page that seems to suggest HCoV-19 and SARS-CoV-1 last "up to 4 hours" on copper surfaces [0]. But when I search the copper.org website using their search feature this is in fact the only result returned for "covid 19" or "coronavirus" [1][2]. Hardly an overbearing amount of independent evidence on this matter. [0]: https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v1 https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v... [1]: https://www.copper.org/search.html?q=covid+19&submit=Search https://www.copper.org/search.html?q=covid+19&submit=Search [2]: https://www.copper.org/search.html?q=coronavirus&submit=Search https://www.copper.org/search.html?q=coronavirus&submit=Sear...
      - airbreather 7y ago
        From a link at www.copper.org : Paper in American Society for Microbiology from 2018 : Rapid inactivation of human coronavirus occurs on brass and copper nickel surfaces at room temperature (21°C).Brasses containing at least 70% copper were very effective at inactivating HuCoV-229E (Fig. 2A), and the rate of inactivation was directly proportional to the percentage of copper. Approximately 103 PFU in a simulated wet-droplet contamination (20 µl per cm2) was inactivated in less than 60 min. Analysis of the early contact time points revealed a lag in inactivation of approximately 10 min followed by very rapid loss of infectivity (Fig. 2B). As observed previously for norovirus, zinc demonstrated a slight antiviral effect compared to that seen with stainless steel (neither metal contains copper). As I said, looks like can do better than 4 hours, copper is the key metal for the action. There is much more, I had thought anyone who was interested could find it all for themselves, but apparently not. Further info is available by searching "copper coronavirus inactivation". Like this from the ICU Management and Practice Bulletin, origin Southhampton Unisversity : During simulated fingertip contamination, the research team observed that the corona virus was inactivated within a few minutes of being exposed to copper or copper alloys (collectively termed "antimicrobial copper"). There is more, but a picture emerges, and it might be useful.
  - airbreather 7y ago
    This reply is selective and chosen quote not representative of the organisation, which I hold no affilation with, but have used their info for some years, regarding bus bar ratings (Copper for Busbars). Of course they market, they provide useful information so people can use their members product effectively and safely. I guess if you live in a world of spin you come to expect it by default from others. CDA are very professional, conservative and reasonable if you take the time to look at their offerings of information. It seems you have judged a book by it's cover. I find the following (Below), is there somewhere else you might suggest is a better place to find info relevant to copper? CDA Mission Statement and Vision Statement Mission Statement: Copper Development Association Inc. (CDA) is a U.S-based, not-for-profit association of the global copper industry, influencing the use of copper and copper alloys through research, development and education, as well as technical and end-user support. CDA is committed to promoting the proper use of copper materials in sustainable, efficient applications for business, industry and the home. Vision Statement: Copper Development Association Inc. promotes the goals of our members while serving the needs of the users, purchasers, designers and specifiers of copper and copper alloy products. We: Are the world’s foremost resource on copper and copper alloy applications
syntaxing 7y ago
Direct link to the study: https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v1.full.pdf https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v...

23 points by deegles 7y ago

Copper and brass may well be much more effective than the article suggests, plenty of info on the web, start with the Copper Development Association.

Mediterraneo10 7y ago
From the Association’s website: > The Copper Development Association Inc. (CDA) is the market development, engineering and information services arm of the copper industry, chartered to enhance and expand markets for copper and its alloys in North America. So, it is a marketing arm. I don’t see how this would be any more reasonable a source of info than the Egg Council for eggs.
- airbreather 7y ago
  You might think on the surface this is a fair comment, but a brief internet search would reveal that there is an overbearing amount of independant evidence onthis matter and the CDA are quite conservative and balanced in presenting it. It was on this basis and acquired knowledge I have from some years interacting with them that I recommended them as a one stop starting point for this info, all items are referenced. But I guess you did not actually go to their webpage to investigate, or do any actual research of your own, so that is how such an erroneous opinion might have formed.
  - c22 7y ago
    GP literally quoted their webpage. Maybe you should stop being cryptic and tell us what you know? I checked out the copper.org website and saw a link on their home page that seems to suggest HCoV-19 and SARS-CoV-1 last "up to 4 hours" on copper surfaces [0]. But when I search the copper.org website using their search feature this is in fact the only result returned for "covid 19" or "coronavirus" [1][2]. Hardly an overbearing amount of independent evidence on this matter. [0]: https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v1 https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v... [1]: https://www.copper.org/search.html?q=covid+19&submit=Search https://www.copper.org/search.html?q=covid+19&submit=Search [2]: https://www.copper.org/search.html?q=coronavirus&submit=Search https://www.copper.org/search.html?q=coronavirus&submit=Sear...
    - airbreather 7y ago
      From a link at www.copper.org : Paper in American Society for Microbiology from 2018 : Rapid inactivation of human coronavirus occurs on brass and copper nickel surfaces at room temperature (21°C).Brasses containing at least 70% copper were very effective at inactivating HuCoV-229E (Fig. 2A), and the rate of inactivation was directly proportional to the percentage of copper. Approximately 103 PFU in a simulated wet-droplet contamination (20 µl per cm2) was inactivated in less than 60 min. Analysis of the early contact time points revealed a lag in inactivation of approximately 10 min followed by very rapid loss of infectivity (Fig. 2B). As observed previously for norovirus, zinc demonstrated a slight antiviral effect compared to that seen with stainless steel (neither metal contains copper). As I said, looks like can do better than 4 hours, copper is the key metal for the action. There is much more, I had thought anyone who was interested could find it all for themselves, but apparently not. Further info is available by searching "copper coronavirus inactivation". Like this from the ICU Management and Practice Bulletin, origin Southhampton Unisversity : During simulated fingertip contamination, the research team observed that the corona virus was inactivated within a few minutes of being exposed to copper or copper alloys (collectively termed "antimicrobial copper"). There is more, but a picture emerges, and it might be useful.
- airbreather 7y ago
  This reply is selective and chosen quote not representative of the organisation, which I hold no affilation with, but have used their info for some years, regarding bus bar ratings (Copper for Busbars). Of course they market, they provide useful information so people can use their members product effectively and safely. I guess if you live in a world of spin you come to expect it by default from others. CDA are very professional, conservative and reasonable if you take the time to look at their offerings of information. It seems you have judged a book by it's cover. I find the following (Below), is there somewhere else you might suggest is a better place to find info relevant to copper? CDA Mission Statement and Vision Statement Mission Statement: Copper Development Association Inc. (CDA) is a U.S-based, not-for-profit association of the global copper industry, influencing the use of copper and copper alloys through research, development and education, as well as technical and end-user support. CDA is committed to promoting the proper use of copper materials in sustainable, efficient applications for business, industry and the home. Vision Statement: Copper Development Association Inc. promotes the goals of our members while serving the needs of the users, purchasers, designers and specifiers of copper and copper alloy products. We: Are the world’s foremost resource on copper and copper alloy applications

syntaxing 7y ago

Direct link to the study: https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v1.full.pdf https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v...