Disinfectant Activity of A Portable Ultraviolet C Equipment.
Andrea GuridiElena SevillanoIñigo de la FuenteEstibaliz MateoElena ErasoGuillermo QuindósPublished in: International journal of environmental research and public health (2019)
Healthcare-associated infections (HAIs) can be caused by microorganisms present in common practice instruments generating major health problems in the hospital environment. The aim of this work was to evaluate the disinfection capacity of a portable ultraviolet C equipment (UV Sanitizer Corvent® -UVSC-) developed to disinfect different objects. For this purpose, six pathogens causing HAIs: Acinetobacter baumannii, Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Candida albicans, were inoculated on slides and discs of different biomaterials (borosilicate, polycarbonate, polyurethane, silicone, Teflon and titanium) and exposed to ultraviolet C radiation. UVSC disinfection was compared with ethanol and chlorhexidine antimicrobial activities following the standards EN14561 and EN14562. Disinfection, established as a reduction of five logarithms from the initial inoculum, was achieved with the UVSC at 120 s of exposure time, with and without the presence of organic matter. The disinfectant effect was observed against S. aureus, P. aeruginosa, E. coli, B. subtilis and C. albicans (reduction >99.999%). Disinfection was also achieved with 70% ethanol and 2% chlorhexidine. As conclusion, UVSC was effective disinfecting the most contaminated surfaces assayed, being a promising alternative for disinfecting hospital materials and inanimate objects that cannot be immersed in liquid biocides, reducing the risk of pathogen transmission.
Keyphrases
- candida albicans
- biofilm formation
- drinking water
- healthcare
- pseudomonas aeruginosa
- acinetobacter baumannii
- staphylococcus aureus
- escherichia coli
- bacillus subtilis
- organic matter
- multidrug resistant
- drug resistant
- mental health
- cystic fibrosis
- public health
- gram negative
- health information
- acute care
- low cost
- emergency department
- adverse drug
- patient reported outcomes
- human health
- surgical site infection