An imported case of Bundibugyo virus disease in Kenya raises questions about airport screening, clinical recognition, and potential exposures, highlighting the importance of coordinated contact tracing and hospital infection prevention readiness.
|Articles|November 9, 2009
Silver and Copper Bullets to Kill Bacteria
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Dana Filoti of the University of New Hampshire will present thin films of silver and copper she has developed that can kill bacteria and may one day help to cut down on hospital-acquired infections.
The antimicrobial properties of silver and copper have been known for centuries; however, last year, the U.S. Environmental Protection Agency (EPA) officially registered copper alloys, allowing them to be marketed with the label "kills 99.9 percent of bacteria within two hours." Copper ions are known to penetrate bacteria and disrupt molecular pathways important for their survival.
Using zeolite ceramic structures, Filoti is testing the hypothesis that the combination of silver and copper might work synergistically to better kill bacteria, work that she will present on Nov. 12 at a meeting of the scientific society AVS in San Jose, Calif. "The hard ceramic structure looks like Swiss cheese and inside the holes there are ions of silver and copper," says Filoti.
By experimenting with the ratio of the two metals and the texture of the thin films, she has been able to reduce the amount of microbes present on the surface by 99 percent. One application of these antimicrobials, which Filoti is developing in partnership with a company in New Hampshire, is an antimicrobial face mask designed to protect against pathogens that cause many hospital-acquired infections.
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