After removing the human error in nosocomial infections, there is a need to look at other areas in the hospital to reduce the spread of germs. Here, copper is being re-discovered to be an effect agent in contact killing of bacteria.
Hospital bed safety railings are a major source of these infections. That’s what Constanza Correa, 33, and her colleagues have found in their research in Santiago, Chile. They’ve taken on the problem by replacing them, since 2013, with railings made of copper, an anti-microbial element.
Copper definitely wipes out microbes. "Bacteria, yeasts and viruses are rapidly killed on metallic copper surfaces, and the term "contact killing" has been coined for this process," wrote the authors of an article on copper in Applied and Environmental Microbiology. That knowledge has been around a very long time. The journal article cites an Egyptian medical text, written around 2600-2000 B.C., that cites the use of copper to sterilize chest wounds and drinking water.
Correa’s startup, Copper BioHealth, has not yet assessed the railings’ impact in Chilean hospitals. But a study of the effects of copper-alloy surfaces in U.S. hospitals’ intensive care units, published last year in Infection Control and Hospital Epidemiology, showed promising results: Their presence reduced the number of healthcare-acquired infections from 8.1 percent in regular rooms to 3.4 percent in the copper rooms.
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