Efficacy of relatively low-cost ultraviolet-C light devices against Candida auris.

Infection Control and Hospital Epidemiology : the Official Journal of the Society of Hospital Epidemiologists of America
Basya PearlmutterCurtis J Donskey

Abstract

Ultraviolet-C (UV-C) light devices could be useful to reduce environmental contamination with Candida auris. However, variable susceptibility of C. auris strains to UV-C has been reported, and the high cost of many devices limits their use in resource-limited settings. To evaluate the efficacy of relatively low-cost (<$15,000 purchase price) UV-C devices against C. auris strains from the 4 major phylogenetic clades. A modification of the American Society for Testing and Materials (ASTM) standard quantitative disk carrier test method (ASTM E 2197) was used to examine and compare the effectiveness of UV-C devices against C. auris, methicillin-resistant Staphylococcus aureus (MRSA), and bacteriophage Phi6. Reductions of 3 log10 were considered effective. UV-C irradiance measurements and colorimetric indicators were used to assess UV-C output. Of 8 relatively low-cost UV-C devices, 6 met the criteria for effective decontamination of C. auris isolates from clades I and II, MRSA, and bacteriophage Phi6, including 3 room decontamination devices and 3 UV-C box devices. Candida auris isolates from clades III and IV were less susceptible to UV-C than clade I and II isolates; 1 relatively low-cost room decontamination device and 2 enclose...Continue Reading

References

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Jan 31, 2019·Infection Control and Hospital Epidemiology : the Official Journal of the Society of Hospital Epidemiologists of America·Jennifer L CadnumCurtis J Donskey
Feb 16, 2019·Infection Control and Hospital Epidemiology : the Official Journal of the Society of Hospital Epidemiologists of America·William A RutalaDavid J Weber
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Jul 1, 2020·Infection Control and Hospital Epidemiology : the Official Journal of the Society of Hospital Epidemiologists of America·D Joseph SextonAnastasia P Litvintseva
Oct 14, 2020·Infection Control and Hospital Epidemiology : the Official Journal of the Society of Hospital Epidemiologists of America·Piyali ChatterjeeChetan Jinadatha

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Aug 21, 2021·American Journal of Infection Control·Jennifer L CadnumCurtis J Donskey

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