Bodyweight changes after challenge with the viruses.

<p>BALB/c mice were intranasally inoculated with A/Egret/Hunan/1/2012, A/Chicken/Hunan/12/2011 viruses at 1×10^6.5 EID₅₀. The bodyweights of 10 mice in each group were measured daily from the date of challenge to 21 days after challenge. Values represent mean ± SD of each group of mice.