an increasing trendp > 0.05
Subsequently, the body weight of mice in all groups gradually resumed an increasing trend, on 4 dpi, there was no significant difference in body weight gain between the low-dose group and the control group ( p > 0.05); On 7 dpi and until the end of the observation period, no statistically significant differences in body weight gain were observed between any of the infected groups and the control group ( p > 0.05).