Comparative efficacy of ethanol and isopropanol against feline calicivirus, a norovirus surrogate.

The virucidal efficacy of various concentrations of ethanol and isopropanol was evaluated against feline calicivirus (FCV), dried on an inanimate, non-porous contact surface for contact times of 1, 3 and 10 minutes. Ethanol at 70% and 90% and isopropanol at 40% to 60% concentrations were found to be the most effective, killing 99% of FCV within a short contact time of 1 minute. American Journal of Infection Control 2006;34:31-5.