The Centers for Disease Control has outlined ways to protect ourselves from the COVID-19 illness, including regular handwashing and social distancing. But what further precautions can we take to protect our family?
We can start by keeping our kitchens, bathrooms and all frequently touched surfaces like doorknobs and light switches clean and sanitized. Many of us are also reevaluating the materials used in our homes. Wherever possible, this means favoring those materials that are naturally germ-resistant, such as cork, copper and copper alloys like brass, bronze and copper-nickel.
Of course, copper was making its modern-day comeback pre-COVID-19, as its rustic, rugged aesthetic is popular with many interior designers and homeowners today. But a brand new study from the National Institutes of Health, CDC, UCLA and Princeton University has brought renewed attention to copper’s antimicrobial properties during the COVID-19 pandemic.
Maestro Round Copper Sink in Tempered
Scientists found that the virus that causes COVID-19 is more stable on plastic and stainless steel than on copper and cardboard. It survives less than four hours on copper surfaces, as opposed to 24 hours on cardboard, and two to three days on plastic and stainless steel, according to the study.
As the only metal known to man during the first five millennia, copper has been used to fight germs throughout history. Ancient Egyptians used it to sterilize wounds and keep drinking water fresh. Ancient Aztecs gargled water mixed with copper to fight sore throats, and the Greek physician Hippocrates reportedly treated leg ulcers with copper. The Romans also used copper to treat burns, headaches and ear infections.
Copper’s ability to quickly kill a wide range of harmful microbes (a term called “contact killing”) was largely rediscovered a decade ago, when an important study done by the American Society for Microbiology confirmed its antimicrobial properties, exploring how numerous viruses and bacteria respond to exposure to copper and copper alloy surfaces. The EPA also registered copper as the first, and so far only, antimicrobial metal surface (and has since registered almost 300 different copper surfaces as antimicrobial).
Copper has antimicrobial properties, killing a wide range of harmful germs.
Today, more hospitals around the world are finding ways to use copper equipment to stem hospital infections. For example, copper hospital beds in the ICU harbor an average of 95 percent fewer bacteria than conventional hospital beds, and maintain these low-risk levels throughout patients’ stay in hospital.
“We’ve seen viruses just blow apart [on copper],” says Bill Keevil, a professor of environmental healthcare at the University of Southampton. “They land on copper and it just degrades them.”
Keevil told Fast Company this month that he believes more architects should choose copper in new building projects.
Santorini Copper Bathtub in Antique
For more on this exceptional material, read about the history of the copper bathtub and why copper can be recycled again and again without losing its quality.
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