Statistical analysis
All experiments were performed in triplicate. The relative viability of viruses was expressed as mean ± standard deviation. One-way ANOVA and a post-hoc analysis with Tukey’s HSD test were performed to determine significant differences (P < 0.05) in the relative viability of bacteriophages among different levels of media composition and among RH levels, respectively. Two-way ANOVA was performed to determine the interaction effect between media composition and RH. One-way ANOVA was performed to determine significant differences (P<0.05) in the evaporation rate of droplets with different initial solute concentrations.