Figure 1From: Virucidal activity of Formulation I of the World Health Organization's alcohol-based handrubs: impact of changes in key ingredient levels and test parametersActivity of the old (poliovirus only) and the proposed new WHO Formulation I against polio- (A, B), noro- (C) and adenovirus (D) tested as 80% and 97% solutions under clean conditions. Virucidal activity is given as reduction factor wit 95% confidence interval.Back to article page