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Virucidal Efficacy of CuVerro V Antimicrobial Copper Film
Citation:
Calfee, W. Virucidal Efficacy of CuVerro V Antimicrobial Copper Film. U.S. Environmental Protection Agency, Washington, DC, EPA/600/S-23/333, 2022.
Impact/Purpose:
Surface-based efficacy tests were conducted to determine the efficacy of new, unused CuVerro antimicrobial copper film against Phi6 and MS2. The efficacy of new CuVerro V film was ≥4.4 Log Reduction against Phi6 and MS2 for contact times ranging from 5 minutes to 2 hours. The efficacy was determined for new CuVerro V film and film that had been deployed for 90 days in LA Metro vehicles (rail car and bus). The efficacy of post-deployed CuVerro V film was ≥5.4 Log Reduction against MS2, for contact times ranging from 5 minutes to 30 minutes. No viable virus was recovered from CuVerro V test surfaces in any of the tests conducted with new or post-deployment film.
Description:
Los Angeles Metro (LA Metro) sent samples of CuVerro V antimicrobial self-adhesive film (EPA Reg# 85353-5) to the U.S. Environmental Protection Agency, Office of Research and Development, Center for Environmental Solutions and Emergency Response, Homeland Security and Materials Management Division, for efficacy testing against the enveloped bacteriophage Phi6 and the non-enveloped bacteriophage MS2. Testing of the CuVerro V film was performed in two phases. The first phase included testing new, unused CuVerro V film using both Phi6 and MS2. The second phase included testing new, unused CuVerro V alongside CuVerro V film which had been deployed by LA Metro for 90 days. Results from previous tests have shown MS2 to be more resistant to several decontamination techniques compared to Phi6. For this reason, only MS2 was used the second phase of testing.