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Copper versus COVID-19 - Honest study summary

 Ventilation ducts and fittings made of copper sheet

Copper properties
Copper is a stable material with long service life and total recycled. It fulfils an important role in ventilation, sanitary, cooling, heating and electrical installations. Bacterial and airborne microbes growth in ventilation systems.

The danger of developing microorganisms in HVAC systems and the potential formation of bacterial infections in the environment of transported air to the rooms cause anxiety among society. To eliminate this problem, copper ventilation is recommended. This metal exhibits bactericidal properties, works as a static (biostatic) or biocidal agent with efficiency and speed of action depending on the surrounding conditions, the concentration of copper ions and the type of microorganisms.

Test approved by EPA (U.S. Environmental Protection Agency Report an environmental violation)[1] proves that copper destroys harmful bacteria, microbes, pathogens, molds, fungi and viruses that come into contact with the surface of copper ventilation ducts.
Bacteria and viruses cause severe respiratory diseases and are precarious for people with a weak immune system.

That is why copper installations are particularly used in the public health sectors and medical facilities receiving patients who are particularly vulnerable to microbes. Bacteria and viruses cause severe respiratory diseases and are very dangerous for people with a reduced immune system. That is why copper installations are particularly used in the public health sectors and medical facilities receiving patients who are particularly vulnerable to microbes.

What do the latest studies on copper and the effects on COVID-19 say?
Studies were carried out involving the application of a dose of SARS-CoV-2 and SARS-CoV-1 (TCID50, 50% of the infectious dose) per liter of air. They were applied at a temperature of 21 to 23°C on copper, stainless steel and plastics at 40% humidity. The tests were carried out for 7 days. All samples were quantified by titration.

The graphs show the time of virus distribution based on the estimated exponential virus decay rates. The dots show the median, and the black lines represent 95% of the reliable range. All experimental measurements are given as means of three replicates.

Wykresy stabilność wirusów SARS-CoV-2 i SARS-CoV-1

Viability of SARS-CoV-1 and SARS-CoV-2 in Aerosols and on Various Surfaces [2]

The stability of SARS-CoV-2 and SARS-CoV-1 viruses on various surfaces was assessed and their disintegration rate was estimated. According to research, germs lasted the longest on materials: stainless steel and plastic. The average half-life of viruses for stainless steel is 5-6 hours, while for plastic it is 6-8 hours. The shortest lifetime was recorded on copper, which was only 2-3 hours.

References: 
1. Rensing, C. and Grass, G. Metallic (2011) Copper as an Antimicrobial Surface. Applied and Environmental Microbiology Vol. 77:1541-1547, American Society for Microbiology (ASM)
2. van Doremalen N et al. Aerosol and surface stability of SARS-CoV-2 as compared with SARS-CoV-1. NEJM. Letter to the editor. DOI: 10.1056/NEJMc2004973 (17 March 2020)

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