Comparison of the treatment schedule of once daily MegaRibavirin (100 mg/mL) aerosol treatments on survival and changes in mean body weights of influenza A/HK/8/68 (H3N2) virus-infected mice. A. Effect on survival. *, P value ≤ 0.05 for comparing the survival curves in each group to the untreated group in each of the experiments using ANOVA with Bonferroni multiple comparisons tests, two-tailed. B. Effect on mean body weights. *, P value < 0.05 for comparing body weights (g, mean ± standard deviation) in each group to the untreated group using the Student's t-Test, two-tailed.