AI Article Synopsis
- There is a known link between poor water quality and health care-associated infections, prompting the need to investigate copper's effectiveness against bacteria in water.
- Copper was tested alongside other materials to assess its ability to kill common hospital pathogens in aqueous environments.
- Results indicated that bacteria in copper containers significantly decreased from over 100,000 CFU/mL to zero within 2 hours, suggesting copper's potential to improve water quality in hospitals.
Article Abstract
Background: An association exists between water of poor quality and health care-associated infections. Copper shows microbiocidal action on dry surfaces; it is necessary to evaluate its antimicrobial effect against organisms in aqueous solution.
Objective: The objective was to determine the in vitro antimicrobial activity of copper against common nosocomial pathogens in aqueous solution.
Methods: Copper and polyvinyl chloride containers were used. Glass was used as control material. Fourteen organisms isolated from hospital-acquired infections, and 3 control strains were tested. Inocula were prepared by direct suspension of colonies in saline solution and water in each container tested. Bacterial counts in colony-forming units (CFU)/mL were determined at the beginning of the experiment; at 30 minutes; and at 1, 2, 24, and 48 hours.
Results: Organisms in glass and polyvinyl chloride remained viable until the end of the experiment. Organisms in copper showed a reduction from more than 100,000 CFU/mL to 0 CFU/mL within the first 2 hours of contact (F > 4.29, P < .001).
Conclusion: Copper containers show microbiocidal action on organisms in aqueous solution. Copper may contribute to the quality of water for human use, particularly in hospitals.
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| http://dx.doi.org/10.1016/j.ajic.2013.03.309 | DOI Listing |
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