Noyce, J.O., Michels, H. and Keevil, C.W.
Inactivation of influenza A virus on copper versus stainless steel surfaces.
Applied and Environmental Microbiology, 73, (8), . (doi:10.1128/AEM.01139-06).
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Influenza A virus particles (2 x 106) were inoculated onto copper or stainless steel and incubated at 22°C at 50 to 60% relative humidity. Infectivity of survivors was determined by utilizing a defined monolayer with fluorescent microscopy analysis. After incubation for 24 h on stainless steel, 500,000 virus particles were still infectious. After incubation for 6 h on copper, only 500 particles were active.
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