As the World Health Organisation¹ suggests the E. coli outbreak in Germany is a strain never before seen in an outbreak – O104:H4 – laboratory science conducted at the University of Southampton indicates a role for copper² in preventing the spread of such infections. Professor Bill Keevil, Head of the Microbiology Group and Director of the Environmental Healthcare Unit at the University of Southampton, explains: "A study looking at copper's efficacy against new strains of E. coli has just been completed. Although it did not specifically look at O104, all the strains investigated have died rapidly on copper."

On a dry copper surface, the study shows 10 million E. coli bacteria are eliminated within 10 minutes. On a wet copper surface, one could expect a total kill within around 45 minutes. This antimicrobial（抗菌剂） property is inherent（固有的，内在的） to the metal, and shared with alloys³ such as brass⁴ and bronze.

In the wake of this outbreak, hand washing and careful food preparation have been highlighted as key concerns, as has cross-contamination. Any raw food placed on a work surface can contaminate（污染） other food, or have bacteria transferred onto it from previous items resting there. Deployed⁵ as a touch surface in food preparation areas, copper will continuously kill any pathogens that settle on it, reducing the risk of cross-contamination, and helping⁶ to prevent the spread of infection.